Mineral Species containing Arsenic (As )

Mineral Species containing Arsenic (As )
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Arsenic (As ) by %

Arsenic (As) Element Properties
Atomic Mass 74.9216
Atomic Number 33
Name Origins Greek, arsenikon = "yellow orpiment."
Year Discovered 1230
Discovery Credits Probably first isolated by Alertus Magus (1193-1280).
Remarks Metalloid with several allotropes, Grey alpha-arsenic is metallic, soft and brittle, tarnishes, burns in O2, resists attack by water, acids, and alkalis. Attacked by hot acids and molten NaOH. Uses: alloys, semiconductors, pesticides, wood preservatives, and glasses.

Diagnostic tests:
Arsenides, sulpharsenites, etc. (As2-), give off fumes when roasted on charcoal, usually easily recognized by their peculiar garlic odor. In the open tube test, they give a white, volatile, crystalline sublimate of As2O3. The blue flame test for arsenic may be visible when the sublimate is blasted with the blowpipe flame.

In the closed tube test with sulfur, they yield a sublimate of dark brown-red when hot and red or reddish yellow when cold; or a black to gray mirror sublimate of metallic arsenic.

Arsenates (AsO4) can be detected by the garlic odor yielded when a mixture of the powdered mineral with charcoal dust and Na2CO3 is heated with a reducing flame on charcoal.
References Emsley, J., 1991; THE ELEMENTS : Sec. Ed., Clarendon Press, Oxford, 251 p.
See Also WebElements, ChemiCool
Naturally Occurring Isotopes
Symbol Isotope Mass Isotope Nuclide Number Isotope Number Natural Abundance Half-life Half-life Units Decay Mode Decay Mode MeV Decay Mode %
As 74.921594 75 33 100.0000%   Stable      

Mineral Species sorted by the element As (Arsenic )

Click Here for Mineral Species Sorted By Mineral Name

%As Mineral Name Chemical Formula MW
100.00%As Arsenic   As 74.92
100.00%As Arsenolamprite   As 74.92
92.04%As Pararsenolamprite  ! As 76.51
90.33%As Duranusite   As4S 331.75
78.13%As Ferroskutterudite  ! (Fe,Co)As3 276.94
78.12%As Nickelskutterudite   (Ni,Co)As3-x 268.53
76.09%As Skutterudite   (Co,Ni)As3-x 246.18
75.74%As Arsenolite   As2O3 197.84
75.74%As Claudetite   As2O3 197.84
75.70%As Dimorphite   As4S3 395.88
72.85%As Lollingite   FeAs2 205.69
72.10%As Clinosafflorite   (Co,Fe,Ni)As2 207.83
72.04%As Safflorite   (Co,Fe)As2 208.00
71.86%As Krutovite   NiAs2 208.53
71.86%As Pararammelsbergite   NiAs2 208.53
71.86%As Rammelsbergite   NiAs2 208.53
70.22%As Paxite   CuAs2 213.39
70.03%As Pararealgar   AsS 106.99
70.03%As Realgar   AsS 106.99
67.50%As Alacranite   As8S9 887.97
65.15%As Uzonite   As4S5 460.02
60.90%As Orpiment   As2S3 246.04
56.79%As Westerveldite   (Fe,Ni,Co)As 131.93
56.30%As Modderite   (Co,Fe)As 133.08
56.07%As Nickeline   NiAs 133.61
56.00%As Langisite   (Co,Ni)As 133.79
54.85%As Anduoite   (Ru,Os)As2 273.20
54.02%As Trippkeite   CuAs+++2O4 277.39
53.86%As Karibibite   Fe+++2As+++4(O,OH)9 556.38
53.66%As Leiteite   ZnAs+++2O4 279.23
48.91%As Ludlockite-(Pb)  * PbFe+++4As+++10O22 1,531.79
48.45%As Ludlockite   (Fe++,Pb)As+++++2O6 309.25
48.14%As Maucherite   Ni11As8 1,244.96
47.45%As Asbecasite   Ca3(Ti,Sn)As+++6Si2Be2O20 1,057.85
47.16%As Omeiite   (Os,Ru)As2 317.76
46.93%As Iridarsenite   (Ir,Ru)As2 319.28
46.84%As Svenekite  ! Ca(H2AsO4)2 319.93
46.48%As Schneiderhohnite   Fe++Fe+++3As+++5O13 805.99
46.40%As Wakabayashilite   [(As,Sb)6S9][As4S5] 1,291.80
46.38%As Oregonite   Ni2FeAs2 323.07
46.18%As Lazarenkoite   CaFe++As+++3O7•3(H2O) 486.73
46.11%As Jeromite  ? As(S,Se)2 162.50
46.01%As Arsenopyrite   FeAsS 162.83
45.37%As Alloclasite   (Co,Fe)AsS 165.15
45.37%As Glaucodot   (Co,Fe)AsS 165.15
45.30%As Ruthenarsenite   (Ru,Ni)As 165.40
45.22%As Gersdorffite   NiAsS 165.68
45.16%As Alarsite  ! AlAsO4 165.90
45.16%As Cobaltite   CoAsS 165.92
43.93%As Lautite   CuAsS 170.53
43.44%As Sperrylite   PtAs2 344.92
42.62%As Laphamite   As2(Se,S)3 351.55
42.13%As Cherepanovite   RhAs 177.83
41.62%As Weilite   CaHAsO4 180.01
41.39%As Haidingerite   Ca(AsO3OH)•(H2O) 181.01
40.90%As Nickenichite   Na0,8Ca0,4(Mg,Fe+++,Al)3Cu0,4(AsO4)3 549.61
40.31%As Cafarsite   Ca8(Ti,Fe++,Fe+++,Mn)6-7(As+++O3)12•4(H2O) 2,230.31
39.03%As Radovanite  ! Cu2Fe+++(AsO4)[As+++O2(OH)2]•H2O 575.94
38.90%As Kaatialaite   Fe+++[H2As+++++O4]3•5-5.5(H2O) 577.74
38.64%As Petewilliamsite  ! (Ni,Co,Cu)30(As2O7)15 5,730.36
38.22%As Berzeliite   (Ca,Na)3(Mg,Mn)2(AsO4)3 588.10
38.09%As Stibarsen   SbAs 196.67
37.68%As Mcnearite   NaCa5H4(AsO4)5•4(H2O) 994.07
37.16%As Yazganite  ! NaFe+++2(Mg,Mn)(AsO4)3•H2O 602.82
37.10%As Mansfieldite   AlAsO4•2(H2O) 201.93
37.02%As Odanielite   Na(Zn,Mg)3H2(AsO4)3 607.12
36.80%As Irhtemite   Ca4Mg(AsO3OH)2(AsO4)2•4(H2O) 814.37
36.54%As Bergslagite   CaBe(AsO4)(OH) 205.02
36.47%As Fluckite   CaMn(HAsO4)2•2(H2O) 410.90
36.40%As Armangite   Mn26As+++18O50(OH)4(CO3) 3,704.99
36.36%As Johillerite   Na(Mg,Zn)3Cu(AsO4)3 610.00
36.33%As Manganberzeliite   (Ca,Na)3(Mn,Mg)2(AsO4)3 618.74
36.22%As Cabalzarite  ! Ca(Mg,Al,Fe++)2(AsO4)2(H2O,OH)2 413.71
36.12%As Manganlotharmeyerite  ! Ca(Mn+++,Mg,)2(AsO4)2(OH,H2O)2 414.80
36.10%As Sainfeldite   Ca5(AsO3OH)2(AsO4)2•4(H2O) 830.14
36.04%As Durangite   NaAl(AsO4)F 207.89
36.01%As Ruarsite   RuAsS 208.06
35.82%As Talmessite   Ca2Mg(AsO4)2•2(H2O) 418.33
35.44%As Johnbaumite   Ca5(AsO4)3(OH) 634.15
35.33%As Vladimirite   Ca5(AsO3OH)2(AsO4)2•5(H2O) 848.16
35.33%As Svabite   Ca5(AsO4)3F 636.15
35.24%As Jolliffeite   (Ni,Co)AsSe 212.63
35.09%As Wendwilsonite   Ca2(Mg,Co)(AsO4)2•2(H2O) 426.99
35.09%As Fetiasite   (Fe++,Fe+++,Ti++++)3O2(As+++2O5) 426.99
34.86%As Orcelite   Ni5-xAs2(x=0.23) 429.79
34.85%As Hutchinsonite   (Pb,Tl)2As5S9 1,074.79
34.68%As Pharmacolite   CaHAsO4•2(H2O) 216.04
34.49%As Grischunite   NaCa2Mn++5Fe+++(AsO4)6•2(H2O) 1,303.23
34.49%As Novakite   (Cu,Ag)21As10 2,172.33
34.29%As Cobaltkoritnigite   (Co,Zn)(AsO3OH)•(H2O) 218.49
34.01%As Adelite   CaMg(AsO4)(OH) 220.31
33.98%As Menshikovite  ! Pd3Ni2As3 661.40
33.95%As Brandtite   Ca2(Mn,Mg)(AsO4)2•2(H2O) 441.30
33.90%As Reinerite   Zn3(As+++O3)2 442.01
33.89%As Stibioclaudetite  ! AsSbO3 240.55
33.83%As Geminite   Cu++2As+++++2O7•3(H2O) 442.98
33.80%As Magnussonite   Mn++5As+++3O9(OH,Cl) 665.07
33.74%As Borishanskiite   Pd1+x(As,Pb)2,x=0-0.2 333.04
33.73%As Roselite   Ca2(Co,Mg)(AsO4)2•2(H2O) 444.30
33.73%As Roselite-beta   Ca2(Co,Mg)(AsO4)2•2(H2O) 444.30
33.70%As Tilasite   CaMg(AsO4)F 222.30
33.55%As Koritnigite   ZnHAsO4•(H2O) 223.33
33.55%As Manganarsite   Mn++3As+++204(OH)4 446.68
33.51%As IMA2000-020  ! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) 1,565.20
33.38%As Parabrandtite   Ca2Mn++(AsO4)•2(H2O) 448.96
33.16%As Calcioandyrobertsite-1M  ! KCaCu5(AsO4)4[As(OH)2O2]•2(H2O) 1,129.55
33.16%As Calcioandyrobertsite-2O  ! KCaCu5(AsO4)4[As(OH)2O2]•2(H2O) 1,129.55
33.13%As IMA2008-066  ! Mn5(H2O)4(AsO3OH)2(AsO4)2 904.44
33.13%As Villyaellenite   Mn++5(AsO3OH)2(AsO4)2•4(H2O) 904.44
33.10%As Nickeltalmessite  ! Ca2Ni(AsO4)2•2H2O 452.71
33.01%As Xanthiosite   Ni3(AsO4)2 453.91
32.76%As Bradaczekite  ! NaCu4(AsO4)3 686.00
32.64%As Nanlingite   CaMg4(AsO3)2F4 459.13
32.62%As Gaitite   Ca2Zn(AsO4)2•2(H2O) 459.41
32.62%As Zincroselite   Ca2Zn(AsO4)2•2(H2O) 459.41
32.61%As Barium-zinc-alumopharmacosiderite  * (Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3•5(H2O) 689.30
32.59%As Krautite   MnAs+++++O3(OH)2•(H2O) 229.89
32.57%As Ferrarisite   Ca5(AsO3OH)2(AsO4)2•9(H2O) 920.22
32.57%As Guerinite   Ca5(AsO3OH)2(AsO4)2•9(H2O) 920.22
32.50%As Pushcharovskite  ! Cu(AsO3OH)•1.5(H2O) 230.50
32.46%As Parascorodite  ! Fe+++AsO4•2(H2O) 230.80
32.46%As Scorodite   Fe+++AsO4•2(H2O) 230.80
32.33%As Ekatite  ! (Fe+++,Fe++,Zn)12(OH)6[AsO3]6[AsO3,HOSiO3]2 1,761.38
32.25%As Sewardite  ! CaFe+++2(AsO4)2(OH)2 464.68
32.11%As Prosperite   CaZn2(AsO4)2•(H2O) 466.71
32.05%As Koutekite   Cu5As2 467.57
31.97%As Lukrahnite  ! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 468.74
31.96%As Cobaltlotharmeyerite  ! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 468.87
31.89%As Caryinite   (Na,Pb)(Ca,Na)(Ca,Mn++)(Mn++,Mg)2(AsO4)3 681.37
31.87%As Picropharmacolite   Ca4Mg(AsO3OH)2(AsO4)2•11(H2O) 940.48
31.79%As Imhofite   Tl6CuAs16S40 3,771.23
31.74%As Stranskiite   Zn2Cu++(AsO4)2 472.16
31.71%As Brassite   Mg(AsO3OH)•4(H2O) 236.29
31.65%As Maxwellite   NaFe+++(AsO4)F 236.75
31.49%As Hollingworthite   (Rh,Pt,Pd)AsS 237.90
31.42%As Chudobaite   (Mg,Zn)5(AsO3OH)2(AsO4)2•10(H2O) 953.87
31.35%As Stibioenargite  * Cu3(Sb,As)S4 597.52
31.28%As Yvonite  ! Cu(AsO3OH)•2(H2O) 239.50
31.25%As Stenhuggarite   CaFe+++(As+++O2)(As+++Sb+++O5) 479.51
31.21%As Majakite   PdNiAs 240.03
31.17%As Andyrobertsite  ! KCdCu5(AsO4)4[As(OH)2O2]•2(H2O) 1,201.88
30.91%As Sinnerite   Cu6As4S9 969.56
30.80%As Theoparacelsite  ! Cu3(OH)2(As2O7) 486.49
30.75%As Burgessite  ! Co2(H2O)4[(AsO3OH)]2•(H2O) 487.36
30.69%As Kolfanite   Ca2Fe+++3O2(AsO4)3•2(H2O) 732.48
30.65%As Wilhelmkleinite  ! ZnFe+++3(AsO4)2(OH)2 488.94
30.53%As Ferrilotharmeyerite   Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2 490.79
30.52%As Urusovite  ! Cu[AlAsO5] 245.45
30.50%As Lotharmeyerite   CaZnMn+++(AsO3OH)4(OH)3 491.28
30.47%As Arseniopleite   (Ca,Na)(Na,Pb)Mn++(Mn++,Mg,Fe++)2(AsO4)3 737.72
30.45%As Bearsite   Be2(AsO4)(OH)•4(H2O) 246.01
30.34%As Smithite   AgAsS2 246.92
30.34%As Trechmannite   AgAsS2 246.92
30.28%As Hornesite   Mg3(AsO4)2•8(H2O) 494.88
30.17%As Sterlinghillite   Mn++3(AsO4)2•3(H2O) 496.70
30.01%As Alumopharmacosiderite   KAl4(AsO4)3(OH)4•6•5(H2O) 748.91
29.86%As Nickellotharmeyerite  ! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 501.90
29.85%As Dienerite  ? Ni3As 250.99
29.81%As Polkanovite  ! Rh12As7 1,759.32
29.70%As Turneaureite   Ca5[(As,P)O4]3Cl 630.63
29.70%As Lapeyreite  ! Cu3O[AsO3(OH)]2•H2O 504.51
29.66%As Attikaite  ! Ca3Cu2Al2(AsO4)4(OH)4•2H2O 944.79
29.60%As Gillulyite   Tl2(As,Sb)8S13 1,518.65
29.60%As Geigerite   Mn5(AsO3OH)2(AsO4)2•10(H2O) 1,012.54
29.59%As Lindackerite   CuCu4(AsO4)2(AsO3OH)2•~9(H2O) 1,012.96
29.57%As Keyite   Cu++3(Zn,Cu)4Cd2(AsO4)6•2(H2O) 1,520.19
29.52%As Chernovite-(Y)   YAsO4 228.43
29.46%As Irarsite   (Ir,Ru,Rh,Pt)AsS 254.29
29.39%As Cobaltaustinite   CaCo(AsO4)(OH) 254.94
29.38%As Warikahnite   Zn3(AsO4)2•2(H2O) 510.04
29.32%As Arseniosiderite   Ca2Fe+++3(AsO4)3O2•3(H2O) 766.50
29.31%As Oenite  ! CoSbAs 255.60
29.27%As Sartorite   PbAs2S4 4,479.49
29.22%As Nickelaustinite   Ca(Ni,Zn)(AsO4)(OH) 256.37
29.06%As Kankite   Fe+++AsO4•3.5(H2O) 257.82
29.04%As IMA2008-010  ! CaCu4(AsO4)2(AsO3OH)2•10H2O 1,032.11
28.87%As Conichalcite   CaCu(AsO4)(OH) 259.55
28.73%As Fahleite   Zn5CaFe+++2(AsO4)6•14(H2O) 1,564.45
28.66%As Austinite   CaZn(AsO4)(OH) 261.39
28.45%As Slavkovite  ! Cu13(AsO4)6(AsO3OH)4•23(H2O) 2,633.67
28.40%As Smolianinovite   (Co,Ni,Mg,Ca)3(Fe+++,Al)2(AsO4)4•11(H2O) 1,081.49
28.27%As Zinclavendulan  ? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) 1,059.91
28.27%As Platarsite   (Pt,Rh,Ru)AsS 265.01
28.25%As Lemanskiite  ! NaCaCu5(AsO4)4Cl•5H2O 1,060.88
28.22%As Lavendulan   NaCaCu5(AsO4)4Cl•5(H2O) 1,062.00
28.21%As Domeykite   Cu3As 265.56
28.19%As Eveite   Mn2(AsO4)(OH) 265.80
28.19%As Sarkinite   Mn++2(AsO4)(OH) 265.80
28.16%As Braithwaiteite   NaCu5(Ti,Sb)2O2(AsO4)4[AsO3(OH)]2•8H2O 1,574.79
28.14%As Chernovite-(Ce)  * (Ce,Y)(AsO4) 266.23
28.09%As Cobaltarthurite  ! CoFe+++2(AsO4)2(OH)2•4(H2O) 533.48
28.08%As Shubnikovite   Ca2Cu8(AsO4)6Cl(OH)•7(H2O)(?) 1,600.61
28.05%As Maghrebite  ! MgAl2(AsO4)2(OH)2•8H2O 534.24
27.98%As Vajdakite  ! [(MoO2)2(H2O)2As2O5]•(H2O) 535.57
27.58%As Rollandite  ! Cu3(AsO4)2•4(H2O) 543.29
27.58%As Kalungaite  ! PdAsSe 258.08
27.50%As Luetheite   Cu2Al2(AsO4)2(OH)4•(H2O) 544.94
27.45%As Barahonaite-(Al)  ! (Ca,Cu,Na,Fe+++,Al)12Al2(AsO4)8(OH,Cl)x•nH2O 2,052.55
27.34%As Simonite   TlHgAs3S6 822.13
27.28%As Angelellite   Fe+++4(AsO4)2O3 549.22
27.25%As Osarsite   (Os,Ru)AsS 274.91
27.22%As Kamarizaite  ! Fe+++3(AsO4)2(OH)3•3H2O 550.45
27.17%As Bendadaite  ! Fe++Fe+++2(AsO4)2(OH)2•4H2O 551.46
26.87%As Barahonaite-(Fe)  ! (Ca,Cu,Na,Fe+++,Al)12Fe+++2(AsO4)8(OH,Cl)x•nH2O 2,141.70
26.85%As Gasparite-(Ce)   CeAsO4 279.03
26.85%As Barium-alumopharmacosiderite  ? BaAl4(AsO4)3(OH)5•5(H2O) 837.12
26.71%As Ojuelaite   ZnFe+++2(AsO4)2(OH)2•4(H2O) 561.00
26.58%As Manganohornesite   (Mn,Mg)3(AsO4)2•8(H2O) 563.80
26.57%As Esperanzaite  ! NaCa2Al2(As+++++O4)2F4(OH)•2(H2O) 563.98
26.52%As Rhodarsenide  ! (Rh,Pd)2As 282.49
26.52%As Mahnertite  ! (Na,Ca)Cu++3(AsO4)2Cl•5(H2O) 565.01
26.48%As Fermorite   (Ca,Sr)5(AsO4,PO4)3(OH) 707.27
26.47%As Olivenite   Cu2AsO4(OH) 283.02
26.46%As Ogdensburgite   Ca2(Zn,Mn)Fe+++4(AsO4)4(OH)6•6(H2O) 1,132.66
26.44%As Filatovite  ! K[(Al,Zn)2(As,Si)2O8] 340.02
26.31%As Palladodymite  ! (Pd,Rh)2As 284.77
26.30%As Zincolivenite  ! CuZn(AsO4)(OH) 284.86
26.13%As Adamite   Zn2(AsO4)(OH) 286.71
26.13%As Paradamite   Zn2(AsO4)(OH) 286.71
26.07%As Liveingite   Pb9As13S28 3,736.63
26.04%As Palladoarsenide   Pd2As 287.76
25.91%As Rauenthalite   Ca3(AsO4)2•10(H2O) 578.23
25.86%As Yanomamite   In(AsO4)•2(H2O) 289.77
25.81%As Rathite   Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40 5,369.42
25.80%As Rosslerite   Mg(AsO3OH)•7(H2O) 290.34
25.74%As Pharmacosiderite   KFe+++4(AsO4)3(OH)4•6-7(H2O) 873.38
25.71%As Rouseite   Pb2Mn++(As+++O3)2•2(H2O) 874.13
25.55%As Ferrisymplesite   Fe+++3(AsO4)2(OH)3•5(H2O) 586.48
25.47%As Nickelschneebergite  ! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 588.23
25.42%As Parasymplesite   Fe++3(AsO4)2•8(H2O) 589.50
25.42%As Symplesite   Fe++3(AsO4)2•8(H2O) 589.50
25.35%As Tooeleite   Fe+++6(AsO3)4(SO4)(OH)4•4H2O 1,388.96
25.23%As Schneebergite  ! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 594.02
25.17%As Edenharterite   TlPbAs3S6 892.88
25.17%As Lammerite   Cu3[(As,P)O4]2 446.50
25.15%As Cahnite   Ca2B(AsO4)(OH)4 297.91
25.15%As Bulachite   Al2(AsO4)(OH)3•3(H2O) 297.95
25.13%As Kutinaite   Cu14Ag6As7 2,086.72
25.13%As Phaunouxite   Ca3(AsO4)•11(H2O) 596.24
25.06%As Annabergite   Ni3(AsO4)2•8(H2O) 598.03
25.03%As Erythrite   Co3(AsO4)2•8(H2O) 598.76
24.99%As Getchellite   AsSbS3 293.81
24.89%As IMA2009-016   Cu4H(AsO4)2(OH)3•H2O 602.07
24.86%As Chenevixite   Cu2Fe+++2(AsO4)2(OH)4•(H2O) 602.67
24.82%As Metakottigite   (Zn,Fe+++,Fe++)3(AsO4)2•8((H2O),OH) 603.71
24.77%As Baumhauerite   Pb3As4S9 1,209.88
24.77%As Baumhauerite-2a  ! Pb3As4S9 1,209.88
24.66%As Cobalttsumcorite  ! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 607.66
24.59%As Legrandite   Zn2(AsO4)(OH)•(H2O) 304.72
24.58%As Yukonite   Ca7Fe+++11(AsO4)9O10•24.3(H2O) 2,742.90
24.52%As Strashimirite   Cu8(AsO4)4(OH)4•5(H2O) 1,222.15
24.45%As Guanacoite  ! (Cu,Mg)2Mg2(Mg,Cu)(OH)4(H2O)4(AsO4)2 612.83
24.38%As Zdenekite   NaPbCu++5(AsO4)4Cl•5(H2O) 1,229.13
24.24%As Kottigite   Zn3(AsO4)2•8(H2O) 618.13
24.24%As Schlossmacherite   (H3O,Ca)Al3(AsO4,SO4)2(OH)6 463.69
24.19%As Sailaufite  ! Ca2Mn3O2(AsO4)2(CO3)•3(H2O) 650.52
24.15%As Arsenoclasite   Mn5(AsO4)2(OH)4 620.56
24.14%As Camgasite   CaMg(AsO4)(OH)•5(H2O) 310.39
24.07%As Natropharmacosiderite   (Na,K)2Fe+++4(AsO4)3(OH)5•7(H2O) 902.63
24.00%As Tsumcorite   PbZnFe++(AsO4)2•(H2O) 624.29
23.83%As Marumoite  ! Pb32As40S92 12,577.34
23.75%As Nowackiite   Cu6Zn3As4S12 1,261.92
23.66%As Jamesite   Pb2Zn2Fe+++5(AsO4)5O4 1,583.01
23.60%As Bariopharmacosiderite   BaFe+++4(AsO4)3(OH)5•5(H2O) 952.59
23.42%As Carminite   PbFe+++2(AsO4)2(OH)2 639.87
23.36%As Rappoldite  ! Pb(Co,Ni,Zn,)2(AsO4)2•2(H2O) 641.37
23.33%As Mapimite   Zn2Fe+++3(AsO4)3(OH)4•10(H2O) 963.26
23.31%As Dixenite   Cu+Mn++14Fe+++(As+++O3)5(SiO4)2(As+++++O4)(OH)6 1,928.25
23.26%As Paulmooreite   Pb2As+++2O5 644.24
23.25%As Zincgartrellite  ! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 644.39
23.09%As Mawbyite   Pb(Fe+++Zn)2(AsO4)2(OH,H2O)2 649.02
23.09%As Thometzekite   Pb(Cu,Zn)2(AsO4)2•2(H2O) 649.08
23.01%As Aerugite   ([],Ni)9(AsO4)2(AsO6)(?) 976.97
22.99%As Helmutwinklerite   PbZn2(AsO4)2•2(H2O) 651.85
22.90%As Ceruleite   Cu2Al7(AsO4)4(OH)13•12(H2O) 1,308.92
22.69%As Richelsdorfite   Ca2Cu5Sb(AsO4)4Cl(OH)6•6(H2O) 1,320.90
22.64%As Akrochordite   Mn4Mg(AsO4)2(OH)4•4(H2O) 661.99
22.61%As Agardite-(Ca)  ! CaCu6(AsO4)3(OH)6•3(H2O) 994.20
22.48%As Goudeyite   (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) 999.68
22.44%As Dussertite   BaFe+++3(AsO4)2(OH)5 667.74
22.40%As Philipsbornite   PbAl3(AsO4)2(OH)5•(H2O) 669.04
22.37%As Arsenowaylandite  * BiAl3(AsO4)2(OH)6 669.81
22.37%As Zalesiite  ! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) 1,004.97
22.32%As Arhbarite   Cu2Mg(AsO4)(OH)3 349.16
22.25%As Arsenogorceixite  ! BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 589.17
22.23%As Euchroite   Cu2(AsO4)(OH)•3(H2O) 337.06
21.98%As Cornubite   Cu5(AsO4)2(OH)4 681.61
21.98%As Cornwallite   Cu5(AsO4)2(OH)4 681.61
21.96%As Zykaite   Fe+++4(AsO4)3(SO4)(OH)•15(H2O) 1,023.45
21.82%As Gerdtremmelite   ZnAl2(AsO4)(OH)5 343.31
21.82%As Lorandite   TlAsS2 343.44
21.80%As Agardite-(Y)   (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,030.82
21.65%As Arsenoflorencite-(Ce)   (Ce,La)Al3(AsO4)2(OH)6 588.17
21.58%As Schultenite   PbHAsO4 347.13
21.54%As Rooseveltite   BiAsO4 347.90
21.54%As Tetrarooseveltite   BiAsO4 347.90
21.48%As Trigonite   Pb3Mn(As+++O3)2(As+++O2OH) 1,046.31
21.14%As Agardite-(Nd)  ! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,063.17
21.12%As Dervillite   Ag2AsS2 354.79
21.04%As Machatschkiite   Ca6(AsO4)(AsO3OH)3(PO4,SO4)•15(H2O) 1,424.07
21.04%As Agardite-(La)  ! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,068.32
20.89%As Stillwaterite   Pd8As3 1,076.12
20.85%As Arsenoflorencite-(Nd)  * (Nd,La,Ce,Ba)(Al,Fe+++)3(AsO4,PO4)2(OH)6 610.95
20.80%As Graulichite-(Ce)  ! CeFe+++3(AsO4)2(OH)6 680.93
20.75%As Agardite-(Dy)  ! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,083.41
20.68%As Dufrenoysite   Pb2As2S5 724.57
20.64%As Vrbaite   Tl4Hg3Sb2As8S20 2,903.50
20.63%As Synadelphite   (Mn,Mg,Ca,Pb)9(As+++O3)(As+++++O4)2(OH)9•2(H2O)(?) 1,089.48
20.54%As Pitticite   Hydrousferricarsenatesulfate(Fe,AsO4,SO4,H2O) 364.69
20.52%As Bayldonite   (Cu,Zn)3Pb(AsO3OH)2(OH)2 730.28
20.42%As Rebulite   Tl5Sb5As8S22 2,935.49
20.37%As Tennantite   (Cu,Fe)12As4S13 1,471.40
20.15%As Flinkite   Mn++2Mn+++(AsO4)(OH)4 371.76
20.15%As Agardite-(Ce)  ! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,070.95
20.01%As Zimbabweite   Na(Pb,Na,K)2(Ta,Nb,Ti)4As+++4O18 1,498.05
19.98%As IMA2007-010  ! PbHgAs2S6 750.03
19.90%As Wallkilldellite   Ca4Mn++6As+++++4O16(OH)8•18(H2O) 1,505.95
19.83%As Segnitite   PbFe+++3H(AsO4)2(OH)6 755.63
19.74%As Arthurite   CuFe+++2(AsO4,PO4,SO4)2(O,OH)2•4(H2O) 531.49
19.69%As Clinoclase   Cu3(AsO4)(OH)3 380.58
19.69%As Gilmarite  ! Cu3(AsO4)(OH)3 380.58
19.68%As Stalderite   TlCu(Zn,Fe,Hg)2As2S6 761.31
19.66%As Bernardite   Tl(As,Sb)5S8 952.59
19.58%As Paakkonenite   Sb2AsS2 382.55
19.50%As Bouazzerite  ! Bi6(Mg,Co)11Fe14[AsO4]18O12(OH)4(H2O)86 6,531.63
19.50%As Arsenbrackebuschite   Pb2(Fe++,Zn)(AsO4)2•(H2O) 768.49
19.48%As Hedyphane   Ca2Pb3(AsO4)3Cl 1,153.97
19.47%As Weilerite   BaAl3H[(As,P)O4]2(OH)6 577.19
19.41%As IMA2008-063   Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 771.98
19.39%As Plumboagardite  ! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) 1,097.39
19.32%As Mixite   BiCu6(AsO4)3(OH)6•3(H2O) 1,163.10
19.22%As Leogangite  ! Cu10(AsO4)4(SO4)(OH)6•8(H2O) 1,543.39
19.20%As Juanitaite  ! (Cu,Ca,Fe)10Bi(AsO4)4(OH)11•2(H2O) 1,560.71
19.19%As Sicherite  ! TlAg2(As,Sb)3S6 878.49
19.05%As Palladobismutharsenide   Pd2(As,Bi) 314.57
19.05%As Arsenogoyazite   (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5•(H2O) 511.39
19.02%As Enargite   Cu3AsS4 393.82
19.02%As Luzonite   Cu3AsS4 393.82
19.02%As Chadwickite  ! (UO2)H(AsO3) 393.96
18.96%As Gabrielite  ! Tl2AgCu2As3S7 1,082.85
18.86%As Arsenocrandallite   (Ca,Sr)Al3[(As,P)O4]2(OH)5•(H2O) 595.75
18.84%As Daomanite  * CuPtAsS2 397.68
18.82%As Wallisite   PbTl(Cu,Ag)As2S5 796.38
18.77%As Allactite   Mn7(AsO4)2(OH)8 798.46
18.62%As Morelandite   (Ba,Ca,Pb)5(AsO4,PO4)3Cl 1,005.93
18.58%As Arsenoflorencite-(La)  * (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6 564.57
18.40%As Wallkilldellite-(Fe)  ! (Ca,Cu)4Fe6[(As,Si)O4]4(OH)8•18(H2O) 1,506.74
18.26%As Quadratite  ! Ag(Cd,Pb)AsS3 410.36
18.22%As Clinotyrolite   Ca2Cu9[(As,S)O4]4(OH)10•10(H2O) 1,562.71
18.18%As Paganoite  ! (Ni,Co)BiAsO5 420.26
18.11%As Gartrellite   Pb(Cu,Fe++)2(AsO4,SO4)2(CO3,H2O)0.7 620.46
18.10%As Seelite-1   Mg[(UO2)(AsO3)x(AsO4)1-x]2•7(H2O) 620.82
18.03%As Hatchite   (Pb,Tl)2AgAs2S5 831.03
17.97%As Aktashite   Cu6Hg3As4S12 1,667.52
17.88%As Gabrielsonite   PbFe++(AsO4)(OH) 418.97
17.70%As Watanabeite   Cu4(As,Sb)2S5 592.45
17.56%As Duftite-alpha   PbCu(AsO4)(OH) 426.67
17.56%As Duftite-beta  ? PbCu(AsO4)(OH) 426.67
17.48%As Arsendescloizite   PbZn(AsO4)(OH) 428.52
17.30%As Liroconite   Cu2Al(AsO4)(OH)4•4(H2O) 433.08
17.23%As Erniggliite   Tl2SnAs2S6 869.72
17.22%As Neustadtelite  ! Bi2Fe+++(Fe+++,Co)(O,OH)2(OH)2(AsO4)2 870.06
17.19%As Tyrolite   CaCu5(AsO4)2(CO3)(OH)4•6(H2O) 871.78
17.11%As Jentschite  ! TlPbAs2SbS6 875.57
17.09%As Cobaltneustadtelite  ! Bi2Fe+++(Co,Fe+++)(O,OH)2(OH)2(AsO4)2 876.83
17.04%As IMA2008-047  ! Cd3Zn2(AsO3OH)2(AsO4)24?H2O 1,319.15
17.03%As Arsenopalladinite   Pd8(As,Sb)3 1,099.54
17.03%As Medenbachite  ! Bi2Fe+++(Cu,Fe+++)(O,OH)2(OH)2(AsO4)2 879.78
16.99%As Liskeardite   (Al,Fe+++)3(AsO4)(OH)6•5(H2O) 440.85
16.99%As Tazieffite  ! Pb20Cd2(As,Bi)22S50Cl10 8,377.10
16.98%As Retzian-(La)   (Mn,Mg)2(La,Ce,Nd)(AsO4)(OH)4 441.31
16.96%As Seligmannite   PbCuAsS3 441.87
16.89%As Chabourneite   (Tl,Pb)21(Sb,As)91S147 18,184.75
16.51%As Sarmientite   Fe+++2(AsO4)(SO4)(OH)•5(H2O) 453.76
16.42%As Algodonite   Cu6As 456.20
16.40%As Retzian-(Ce)   Mn2Ce(AsO4)(OH)4 456.94
16.31%As Retzian-(Nd)   Mn2(Nd,Ce,La)(AsO4)(OH)4 459.29
16.26%As Jarosewichite   Mn++3Mn+++(AsO4)(OH)6 460.72
16.12%As Atheneite   (Pd,Hg)3As 464.81
16.09%As Magnesiochlorophoenicite   (Mg,Mn)3Zn2(AsO4)(OH,O)6 465.62
15.98%As Preisingerite   Bi3(AsO4)2O(OH) 937.79
15.77%As Metanovacekite   Mg(UO2)2(AsO4)2•4-8(H2O) 950.29
15.73%As Natrouranospinite   (Na2,Ca)(UO2)2(AsO4)2•5(H2O) 952.47
15.62%As Laffittite   AgHgAsS3 479.58
15.61%As Galkhaite   (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12 1,727.48
15.61%As Finnemanite   Pb5(As+++O3)3Cl 1,440.21
15.57%As Hallimondite   Pb2(UO2)(AsO4)2 962.27
15.54%As Trogerite   H2(UO2)2(AsO4)2•8(H2O) 964.03
15.47%As Arakiite  ! (Zn,Mn++)(Mn++,Mg)12(Fe+++,Al)2(AsO3)(AsO4)2(OH)23 1,452.97
15.41%As Marrite   PbAgAsS3 486.19
15.35%As Pierrotite   Tl2Sb6As4S16 1,952.01
15.31%As Hematolite   (Mn,Mg,Al)15(AsO3)(AsO4)2(OH)23 1,468.19
15.30%As Bukovskyite   Fe+++2(AsO4)(SO4)(OH)•7(H2O) 489.79
15.29%As Chlorophoenicite   (Mn,Mg)3Zn2(AsO4)(OH,O)6 980.21
15.14%As Proustite   Ag3AsS3 494.72
15.14%As Xanthoconite   Ag3AsS3 494.72
15.10%As Clinomimetite   Pb5(AsO4)3Cl 1,488.21
15.10%As Mimetite   Pb5(AsO4)3Cl 1,488.21
15.08%As Mgriite   (Cu,Fe)3AsSe3 496.67
14.95%As Metauranospinite   Ca(UO2)2(AsO4)2•8(H2O) 1,002.09
14.95%As Feinglosite  ! Pb2(Zn,Fe)[(As,S)O4]2•(H2O) 751.83
14.79%As Philipsburgite   (Cu,Zn)6(AsO4,PO4)2(OH)6•(H2O) 759.97
14.72%As Metakahlerite   Fe++(UO2)2(AsO4)2•8(H2O) 1,017.86
14.71%As Holdenite   (Mn,Mg)6Zn3(AsO4)2(SiO4)(OH)8 1,018.89
14.68%As Juabite  ! (Ca,Fe++)Cu10(Te++++O3)4(As+++++O4)4(OH)2•4(H2O) 2,040.94
14.68%As Metarauchite  ! Ni(UO2)2(AsO4)2•8H2O 1,020.71
14.68%As Metakirchheimerite   Co(UO2)2(AsO4)2•8(H2O) 1,020.95
14.61%As Metazeunerite   Cu(UO2)2(AsO4)2•8(H2O) 1,025.56
14.49%As Kemmlitzite   (Sr,Ce)Al3(AsO4)(SO4)(OH)6 517.07
14.49%As Arsenosulvanite  ? Cu3(As,V)S4 387.83
14.43%As Uranospinite   Ca(UO2)2(AsO4)2•10(H2O) 1,038.12
14.41%As Abernathyite   K(UO2)(AsO4)•4(H2O) 520.11
14.26%As Sabelliite  ! Cu2Zn(As,Sb)O4(OH)3 394.13
14.16%As Novacekite   Mg(UO2)2(AsO4)2•12(H2O) 1,058.38
14.14%As Chistyakovaite-(Y)  ! Al(UO2)2(AsO4)2(F,OH)•6.5H2O 969.53
14.11%As Zeunerite   Cu(UO2)2(AsO4)2•10-16(H2O) 1,061.59
14.09%As Metalodevite   Zn(UO2)2(AsO4)2•10(H2O) 1,063.44
14.00%As Lengenbachite   Pb6(Ag,Cu)2As4S13 2,140.02
13.98%As Kahlerite   Fe++(UO2)2(AsO4)2•10-12(H2O) 1,071.91
13.87%As Chursinite   Hg+Hg++(AsO4) 540.10
13.67%As Seelite-2   Mg(UO2)(AsO3)x(AsO4)1-x•7(H2O)(x=0.7) 548.16
13.63%As Metaheinrichite   Ba(UO2)2(AsO4)2•8(H2O) 1,099.34
13.54%As Seinajokite   (Fe,Ni)(Sb,As)2 276.64
13.51%As Gottlobite  ! CaMg(VO4,AsO4)(OH) 205.20
13.03%As Palenzonaite   (Ca,Na)3Mn++(V+++++,As+++++,Si)3O12 517.63
13.01%As Christite   TlHgAsS3 576.09
12.99%As Heinrichite   Ba(UO2)2(AsO4)2•10-12(H2O) 1,153.39
12.99%As Cervandonite-(Ce)   (Ce,Nd,La)(Fe+++,Fe++,Ti++++,Al)3(SiO7)1-x+y(AsO3)1+x-y(OH)3x-3y 634.48
12.77%As Gebhardite   Pb8(As+++2O5)2OCl6 2,346.00
12.74%As Tiragalloite   Mn++4As+++++Si3O12(OH) 587.93
12.57%As Arsenuranospathite   HAl(UO2)4(AsO4)4•40(H2O) 2,384.39
12.56%As Guettardite   Pb(Sb,As)2S4 536.82
12.45%As Tsugaruite  ! Pb4As2S7 1,203.11
12.32%As Arsenobismite  ? Bi2(AsO4)(OH)3 607.90
12.13%As Chameanite   (Cu,Fe)4As(Se,S)4 617.65
12.12%As Teruggite   Ca4MgAs2B12O22(OH)12•12(H2O) 1,236.44
12.10%As Argentotennantite   (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 1,857.26
12.06%As Parnauite   Cu9(AsO4)2(SO4)(OH)10•7(H2O) 1,242.00
12.04%As Kolicite   Mn7Zn4(AsO4)2(SiO4)2(OH)8 1,244.19
11.98%As Hidalgoite   PbAl3(AsO4)(SO4)(OH)6 625.17
11.66%As Kraisslite   (Mn++,Mg)24Zn3Fe+++(As+++O3)2(As+++++O4)3(SiO4)6(OH)18 3,019.54
11.62%As Routhierite   TlCu(Hg,Zn)2(As,Sb)2S3 967.16
11.57%As Tomichite   (V,Fe)4Ti3AsO13(OH) 647.82
11.49%As Nealite   Pb4Fe++(As+++++O4)2Cl4 1,304.30
11.47%As Gallobeudantite  ! PbGa3[(AsO4),(SO4)]2(OH)6 718.80
11.45%As Nealite-(H2O)  * Pb4Fe++(As+++O3)2Cl4•2(H2O) 1,308.33
11.44%As Vozhminite   (Ni,Co)4(As,Sb)S2 392.79
11.40%As Joelbruggerite  ! Pb3Zn3Sb+++++As2O13(OH) 1,314.36
11.33%As Gratonite   Pb9As4S15 2,645.48
11.30%As Parwelite   (Mn,Mg)5Sb(As,Si)2O12 662.77
11.23%As Graeserite  ! (Fe+++,Ti)4Ti3AsO13(OH) 666.95
11.00%As Giraudite   (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 2,042.97
10.96%As Mutnovskite  ! Pb2AsS3(I,Cl,Br) 670.21
10.53%As Beudantite   PbFe+++3(AsO4)(SO4)(OH)6 711.77
10.42%As Mcgovernite   Mn9Mg4Zn2As2Si2O17(OH)14 1,438.55
10.26%As Arsentsumebite   Pb2Cu(AsO4)(SO4)(OH) 729.94
10.21%As Walentaite   (Ca,Mn++,Fe++)Fe+++3(AsO4)(PO4)3(PO3OH) 733.47
10.13%As Schlegelite  ! Bi7O4(MoO4)2(AsO4)3 2,227.18
10.10%As Orthowalpurgite   (UO2)Bi4O4(AsO4)2•2(H2O) 1,483.82
10.10%As Walpurgite   Bi4(UO2)(AsO4)2O4•2(H2O) 1,483.82
10.07%As Coparsite  ! Cu4O2[(As,V)O4]Cl 446.55
10.05%As Fettelite  ! [Ag6As2S7][Ag10HgAs2S8] 2,720.84
9.99%As Fornacite   Pb2Cu(CrO4)(AsO4)(OH) 749.87
9.99%As Arsenovanmeersscheite   U(OH)4[(UO2)3(AsO4)2(OH)2]•4H2O 1,500.06
9.97%As Atelestite   Bi8(AsO4)3(OH)5O5 2,253.63
9.84%As Palarstanide   Pd8(Sn,As)3 1,141.81
9.77%As Uramarsite  ! (NH4,H3O)2(UO2)2(AsO4,PO4)2•6H2O 935.42
9.75%As Schallerite   Mn++16[As+++O2OH][Si12O30](OH)14 2,305.90
9.65%As Kuznetsovite  ! Hg3Cl(AsO4) 776.14
9.58%As Isomertieite   Pd11Sb2As2 1,563.96
9.55%As Ellisite   Tl3AsS3 784.27
9.52%As Arsenuranylite   Ca(UO2)4(AsO4)2(OH)4•6(H2O) 1,574.15
9.49%As Theisite   Cu5Zn5[(As+++++,Sb+++++)O4]2(OH)14 1,184.04
9.40%As Nelenite   (Mn,Fe++)16Si12As+++3O36(OH)17 2,312.59
9.32%As Paraniite-(Y)   Ca2Y(AsO4)(WO4)2 803.68
9.22%As Hugelite   Pb2(UO2)3(AsO4)2(OH)4•3(H2O) 1,624.40
9.18%As Fangite   Tl3AsS4 816.34
9.13%As Natrobetpakdalite   (Na,Ca)3Fe+++2(As2Mo6O28)•15(H2O) 1,641.45
9.10%As Ecdemite   Pb6As+++2O7Cl4 1,646.85
9.10%As Heliophyllite   Pb6As2O7Cl4 1,646.85
8.69%As Veenite   Pb2(Sb,As)2S5 776.08
8.53%As Molybdofornacite   Pb2Cu[(As,P)O4][(Mo,Cr)O4](OH) 790.12
8.39%As Vurroite  ! Pb20Sn2(Bi,As)22S54Cl6 9,577.60
8.28%As Tvalchrelidzeite   Hg3SbAsS3 904.31
8.08%As Paradocrasite   Sb2(Sb,As)2 463.59
8.02%As Vincentite   (Pd,Pt)3(As,Sb,Te) 466.99
7.81%As Cupropearceite   [Cu6As2S7][Ag9CuS4] 1,918.21
7.47%As Chalcophyllite   Cu++18Al2(AsO4)3(SO4)3(OH)27•33(H2O) 3,010.49
7.35%As Manganostibite   (Mn++,Fe++)7(SbO4)(AsO4,SiO4)O4 764.25
7.33%As Billingsleyite   Ag7AsS6 1,022.40
7.21%As Johninnesite   Na2Mg4Mn++12(AsO4)2(Si12O35)(OH)6 2,079.34
7.17%As Jordanite   Pb14(As,Sb)6S23 4,181.50
7.09%As Jankovicite   Tl5Sb9(As,Sb)4S22 3,169.63
6.90%As Dugganite   Pb3Zn3Te(As,V,Si)2(O,OH)14 1,302.29
6.84%As Freedite   Pb8Cu+(As+++O3)2O3Cl5 2,192.25
6.82%As Betpakdalite   [Mg(H2O)6]Ca2(H2O)13[Mo++++++8As+++++2Fe+++3O36(OH)]•4(H2O) 2,196.70
6.81%As Georgiadesite   Pb4(AsO3)Cl4(OH) 1,099.47
6.76%As Nielsbohrite  ! K(UO2)3(AsO4)(OH)4•H2O 1,093.26
6.72%As Colusite   Cu12-13V(As,Sb,Sn,Ge)3S16 1,673.29
6.60%As Mertieite-I   Pd11(Sb,As)4 1,474.99
6.51%As Ardennite-(As)   (Mn++,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(OH)6 1,036.05
6.36%As Kirkiite   Pb10Bi3As3S19 3,532.96
5.96%As Obradovicite   H4(K,Na)Cu++Fe+++2(AsO4)(MoO4)5•12(H2O) 1,257.18
5.81%As Mallestigite  ! Pb3Sb+++++(SO4)(AsO4)(OH)6•3(H2O) 1,135.63
5.42%As Arsenpolybasite   [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7] 2,074.59
5.35%As Hemloite   (As,Sb)2(Ti,V,Fe,Al)12O23OH 1,050.40
5.26%As Coiraite  ! (Pb,Sn)12.5As3Sn5FeS28 4,256.03
5.25%As Gerstleyite   Na2(Sb,As)8S13•2(H2O) 1,426.04
5.12%As Fianelite  ! Mn++2V+++++(V+++++,As+++++)O7•2(H2O) 365.78
4.99%As Schumacherite   Bi3[(V,As,P)O4]2O(OH) 900.22
4.95%As Sterryite   Ag2Pb10(Sb,As)12S29 4,538.17
4.40%As Vicanite-(Ce)   (Ca,Ce,La,Th)15As+++++(As+++0.5,Na0.5)Fe+++Si6B4O40F7 2,554.77
4.38%As Madocite   Pb17(Sb,As)16S41 6,841.29
4.33%As Sahlinite   Pb14(AsO4)2O9Cl4 3,464.44
4.32%As Parapierrotite   Tl(Sb,As)5S8 1,041.56
4.22%As Pearceite   [Ag9CuS4][(Ag,Cu)6(As,Sb)2S7] 2,096.80
4.18%As Tillmannsite  ! (Ag3Hg)(V,As)O4 645.05
4.01%As Caryopilite   (Mn++,Mg,Zn,Fe++)3(Si,As)2O510(OH,Cl)4 373.76
3.88%As Freibergite   (Ag,Cu,Fe)12(Sb,As)4S13 1,929.46
3.82%As Nabiasite  ! BaMn9[(V,As)O4]6(OH)2 1,372.20
3.77%As Asselbornite   (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3(H2O) 3,237.04
3.70%As Hakite   (Cu,Hg)3(Sb,As)(Se,S)3 606.78
3.52%As Biehlite  ! (Sb,As)2MoO6 426.07
3.49%As Germanocolusite   Cu13V(Ge,As)3S16 1,609.66
3.30%As Arsenohauchecornite   Ni18Bi3AsS16 2,271.34
3.28%As Turtmannite  ! (Mn,Mg)25.5[(V,As)O4]3(SiO4)3[AsO3]xO5-5x(OH)20+x 2,396.92
3.28%As Nekrasovite   Cu+26V2(Sn,As,Sb)6S32 3,426.88
2.91%As Roshchinite   Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 12,887.63
2.85%As Benleonardite   Ag8(Sb,As)Te2S3 1,312.68
2.78%As Stibiocolusite   Cu13V(Sb,As,Sn)3S16 1,616.76
2.72%As Zinclipscombite  ! ZnFe+++2(PO4)2(OH) 386.04
2.69%As Phosphowalpurgite  ! (UO2)Bi4(PO4)O4•2(H2O) 1,391.69
2.61%As Polybasite   [Ag9CuS4][(Ag,Cu)6(Sb,As)2S7] 2,154.03
2.60%As Reppiaite   Mn++5[(V,As)O4]2(OH)4 577.39
2.57%As Cobaltkieserite  ! CoSO4•H2O 175.01
2.55%As Ovamboite  ! Cu20(Fe,Cu,Zn)6W2Ge6S32 3,470.24
2.51%As Santafeite   (Mn,Fe,Al,Mg)2(Mn++++,Mn++)2(Ca,Sr,Na)3(VO4,AsO4)4(OH)3•2(H2O) 896.52
2.36%As Vinciennite   Cu10Fe4Sn(As,Sb)S16 1,588.95
2.27%As Maikainite  ! Cu20(Fe,Cu)6Mo2Ge6S32 3,296.63
2.26%As Renierite   (Cu,Zn)11(Ge,As)2Fe4S16 1,655.51
2.23%As Hundholmenite-(Y)  ! (Y,REE,Ca,Na)15(Al,Fe+++)CaxAs+++1-x(Si,As+++++)Si6B3(O,F)48 2,521.06
2.16%As Thorikosite   Pb3(Sb+++,As+++)O3(OH)Cl2 867.55
2.15%As Baumstarkite  ! Ag3(Sb,As)2SbS6 869.54
2.03%As Holtite   Al6(Al,Ta)(BO3)[(SiO4,SbO4,AsO4)]3(O,OH)3 2,589.58
1.92%As Suredaite  ! PbSnS3 390.35
1.82%As Calciopetersite  ! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) 907.06
1.81%As Medaite   (Mn,Ca)6(V+++++,As)Si5O18(OH) 827.82
1.80%As Goldfieldite   Cu12(Te,Sb,As)4S13 1,665.23
1.77%As Antimonpearceite   [Ag9CuS4][(Ag,Cu)6(Sb,As)2S7] 2,121.41
1.73%As Geocronite   Pb14(Sb,As)6S23 4,321.99
1.68%As Phosphohedyphane  ! Ca2Pb3(PO4)3Cl 1,068.23
1.59%As Welshite   Ca4Mg9Sb3O4[Si6Be3AlFe2O36] 1,746.53
1.45%As Calvertite  ! Cu5Ge0.5S4 495.06
1.35%As Krettnichite  ! PbMn+++2(VO4)2(OH)2 553.38
1.30%As Twinnite   Pb(Sb,As)2S4 574.28
0.72%As Waterhouseite  ! Mn7(PO4)2(OH)8 727.16
0.62%As Mertieite-II   Pd8(Sb,As)3 1,211.93
0.60%As Selenopolybasite  ! [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2] 2,378.81
0.39%As Sorbyite   Pb19(Sb,As)20S49 5,737.49
0.31%As Naldretteite  ! Pd2Sb 333.37
0.30%As Raadeite  ! Mg7(PO4)2(OH)8 493.69
0.24%As Ardennite-(V)  ! Mn++4[Al4(Mg,Al,Fe+++,Mn+++)2][Si5(V,Si)]O22(OH)6 1,015.46
0.20%As Ungavaite  ! Pd4Sb3 790.08
0.11%As Scheuchzerite  ! Na(Mn,Mg)9[VSi9O28(OH)](OH)3 1,309.36
0.11%As Proshchenkoite-(Y)  ! (Y,REE,Ca,Na,Mn)15Fe++Ca(P,Si)Si6B3(O,F)48 2,711.51

(* - Mineral Name Is Not IMA Approved)
(! - New Dana classification added or changed from Danas New Mineralogy)
(? - IMA Discredited Mineral Species Name)

There are 565 minerals with As in the Mineralogy Database.
  • Actinium
  • Aluminum
  • Americium
  • Antimony
  • Argon
  • Arsenic
  • Astatine
  • Barium
  • Berkelium
  • Beryllium
  • Bismuth
  • Boron
  • Bromine
  • Cadmium
  • Calcium
  • Calfornium
  • Carbon
  • Cerium
  • Cesium
  • Chlorine
  • Chromium
  • Cobalt
  • Copper
  • Curium
  • Dysprosium
  • Einsteinium
  • Erbium
  • Europium
  • Fermium
  • Fluorine
  • Francium
  • Gadolinium
  • Gallium
  • Germanium
  • Gold
  • Hafnium
  • Hahnium
  • Helium
  • Holmium
  • Hydrogen
  • Indium
  • Iodine
  • Iridium
  • Iron
  • Krypton
  • Lanthanum
  • Lead
  • Lithium
  • Lutetium
  • Magnesium
  • Manganese
  • Mendelevium
  • Mercury
  • Molybdenum
  • Neodymium
  • Neon
  • Neptunium
  • Nickel
  • Niobium
  • Nitrogen
  • Nobelium
  • Osmium
  • Oxygen
  • Palladium
  • Phosphorus
  • Platinum
  • Plutonium
  • Polonium
  • Potassium
  • Praeseodymium
  • Promethium
  • Protactinium
  • Radium
  • Radon
  • Rhenium
  • Rhodium
  • Rubidium
  • Ruthenium
  • Samarium
  • Scandium
  • Selenium
  • Silicon
  • Silver
  • Sodium
  • Strontium
  • Sulfur
  • Tantalum
  • Technetium
  • Tellurium
  • Terbium
  • Thallium
  • Thorium
  • Thulium
  • Tin
  • Titanium
  • Tungsten
  • Uranium
  • Vanadium
  • Xenon
  • Ytterbium
  • Yttrium
  • Zinc
  • Zirconium

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