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Zaccagnaite

A valid IMA mineral species
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01939010017271929544800.jpg
Zaccagnaite-3R

El Soplao cave, La Florida mining area, Sierra de Arnero, Cantabria, Spain
02473150017271929558009.jpg
Zaccagnaite, etc.

Hilarion Mine, Kamariza Mines, Agios Konstantinos, Lavreotiki, East Attica, Attica, Greece
04838730017271929567480.jpg
Zaccagnaite-3R

El Soplao cave, La Florida mining area, Sierra de Arnero, Cantabria, Spain
01939010017271929544800.jpg
Zaccagnaite-3R

El Soplao cave, La Florida mining area, Sierra de Arnero, Cantabria, Spain
02473150017271929558009.jpg
Zaccagnaite, etc.

Hilarion Mine, Kamariza Mines, Agios Konstantinos, Lavreotiki, East Attica, Attica, Greece
04838730017271929567480.jpg
Zaccagnaite-3R

El Soplao cave, La Florida mining area, Sierra de Arnero, Cantabria, Spain
01939010017271929544800.jpg
Zaccagnaite-3R

El Soplao cave, La Florida mining area, Sierra de Arnero, Cantabria, Spain
02473150017271929558009.jpg
Zaccagnaite, etc.

Hilarion Mine, Kamariza Mines, Agios Konstantinos, Lavreotiki, East Attica, Attica, Greece
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About ZaccagnaiteHide

07278540017271929571029.jpg
Domenico Zaccagna
Formula:
Zn4Al2(OH)12[CO3] · 3H2O
Colour:
White to pale yellow
Lustre:
Adamantine, Sub-Adamantine
Specific Gravity:
2.84 (Calculated)
Crystal System:
Hexagonal
Name:
Named in honor of Domenico Zaccagna (3 September 1851, Carrara, Italy - 11 March 1940, Rome, Italy), a scholar and mineral collector who specialised in the geology and mineralogy of the Carrara marbles of the Apuan Alps of northern Tuscany, Italy, where the species was discovered.
Hydrotalcite Group


Unique IdentifiersHide

Mindat ID:
10810
Long-form identifier:
mindat:1:1:10810:4

IMA Classification of ZaccagnaiteHide

Classification of ZaccagnaiteHide

Strunz-mindat (2026):
5.DA.45

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th ed.:
16b.6.1.4

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
ZacIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ZaccagnaiteHide

Lustre:
Adamantine, Sub-Adamantine
Transparency:
Transparent
Colour:
White to pale yellow
Streak:
White
Cleavage:
Perfect
Perfect on {0001}
Density:
2.84 g/cm3 (Calculated)

Optical Data of ZaccagnaiteHide

Type:
Uniaxial (-)

Chemistry of ZaccagnaiteHide

Mindat Formula:
Zn4Al2(OH)12[CO3] · 3H2O
Element Weights:
Element% weight
O45.451 %
Zn41.274 %
Al8.517 %
H2.863 %
C1.896 %

Calculated from ideal end-member formula.
O
Zn
Al
H
C
Elements listed:
Al, C, H, O, Zn - search for minerals with similar chemistry

Crystallography of ZaccagnaiteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Comment:
Zaccagnaite-2HZaccagnaite-3R
Zn4Al2(OH)12[CO3] · 3H2OZn4Al2(OH)12[CO3] · 3H2O
Hexagonal Trigonal 
6/mmm(6/m2/m2/m) - Dihexagonal Dipyramidal3m(32/m) - Hexagonal Scalenohedral
P63/mmcR3m
P63/mmcR3m
a = 3.0725(3) Å, c = 15.114(4) Å
a = 3.06616(1) Å, c = 22.6164(1) Å
a:c = 1 : 4.919a:c = 1 : 7.376
V 123.56 ų
(Calculated from Unit Cell)		V 184.139 ų
 3
  

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018810ZaccagnaiteLozano R P, Rossi C, La Iglesia A, Matesanz E (2012) Zaccagnaite-3R, a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain) American Mineralogist 97 513-5232012El Soplao cave, Cantabria, Spain0293
0002735ZaccagnaiteMerlino S, Orlandi P (2001) Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties and structural features American Mineralogist 86 1293-130120010293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.51 Å(vs)
1.542 Å(ms)
1.539 Å(ms)
3.794 Å(m)
2.511 Å(mw)
2.175 Å(mw)
1.830 Å(mw)
Comments:
2H polytype

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)

Type Occurrence of ZaccagnaiteHide

Type Locality:
ⓘ Calagio quarries (Calagio Quarry; Olmo Quarry), Colonnata quarrying basin, Carrara, Massa-Carrara Province, Tuscany, Italy
General Appearance of Type Material:
Minute hexagonal crystals < 0.2 mm long and 0.02-0.03 mm thick. These are covered by a thin crust of fraipontite and resemble so-called “Brugola” screws (i.e., set-screws).
Place of Conservation of Type Material:
Natural History Museum, University of Pisa, Italy.
Geological Setting of Type Material:
Cavities in calcite veins in marble.
Associated Minerals at Type Locality:
FraipontiteHydrozincite
Reference:
Merlino, Stefano, Orlandi, Paolo (2001) Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties, and structural features. American Mineralogist, 86 (10) 1293-1301 doi:10.2138/am-2001-1017

Synonyms of ZaccagnaiteHide

Other Language Names for ZaccagnaiteHide

Relationship of Zaccagnaite to other SpeciesHide

Member of:
Quintinite Group > Hydrotalcite Supergroup
Other Members of Quintinite Group:
CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig. 32 : P3112
CharmariteMn2+4Al2(OH)12[CO3] · 3H2OHex.
ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mcm
ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
LiudongshengiteZn4Cr2(OH)12(CO3) · 3H2OTrig. 3m(32/m) : R3m
QuintiniteMg4Al2(OH)12(CO3) · 3H2OHex. 622 : P6322
'Unnamed (Zn-analogue of Chlormagaluminite)'Zn4Al2(OH)12Cl2 · 2H2O

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Zaccagnaite associated with HydrozinciteZn5(CO3)2(OH)6
1 photo of Zaccagnaite associated with ZincowoodwarditeZn1-xAlx(OH)2[SO4]x/2 · nH2O

Related Minerals - Strunz-mindat GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl · 6H2OHex. 6/mmm(6/m2/m2/m) : P63/mcm
5.DA.AmoraiteCa12Al6(OH)36(CO3)2(SO3) · 15H2O Tric. 1 : P1
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon. 2 : P21
5.DA.05'UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)'Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05'UM1987-01-CO:HMgS'Mg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon. 2/m : P21/c
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon. 2/m : P21/c
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon. 2/m : B2/m
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex. 6 : P63
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon. 2/m : B2/b
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2OTric. 1 : P1
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OTric.
5.DA.40KarchevskyiteMg18Al9(OH)54Sr2(CO3)9(H2O)6(H3O)5Trig.
5.DA.40'UM1987-05-OH:AlCMg'Mg4Al2(OH)12(CO3,SO4) · 3H2O
5.DA.40QuintiniteMg4Al2(OH)12(CO3) · 3H2OHex. 622 : P6322
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2OHex.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig. 32 : P3112
5.DA.45'Hydrotalcite-2H'Mg6Al2(CO3)(OH)16 · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
5.DA.45'Stichtite-2H'Mg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45'Pyroaurite-2H'Mg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
5.DA.45LiudongshengiteZn4Cr2(OH)12(CO3) · 3H2OTrig. 3m(32/m) : R3m
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mcm
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m(32/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig. 3m(32/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig. 3m(32/m) : R3m
5.DA.50KaznakhtiteNi6Co3+2(CO3)(OH)16 · 4H2OTrig. 3 : R3
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50Marioantofilliite[Cu4Al2(OH)12](CO3) · 3H2OMon. 2/m : B2/m
5.DA.50HydrotalciteMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m(32/m) : R3m
5.DA.50StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m(32/m) : R3m
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m(32/m)
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig. 3m(32/m) : R3m
5.DA.55Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
5.DA.60ŠlikiteZn2Mg(CO3)2(OH)2 · 4H2OTric. 1 : P1
5.DA.65MarkliteCu5(CO3)2(OH)6 · 6H2OMon. 2/m : P21/c

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for ZaccagnaiteHide

References for ZaccagnaiteHide

Localities for ZaccagnaiteHide

Showing 14 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Belgium
 
  • Wallonia
    • Liège
      • Lontzen
        • Walhorn
Blondieau et al. (2016)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Agios Konstantinos (Kamariza)
          • Kamariza Mines (Kamareza Mines)
Witzke et al. (2000)
          • Mercati mines
Italy
 
  • Friuli Venezia Giulia
    • Udine Province
[Zaccagnaite-3R] Bortolozzi et al. (2018)
  • Tuscany
    • Massa-Carrara Province
Merlino et al. (2001) +1 other reference
        • Colonnata quarrying basin
Merlino et al. (2001) +2 other references
        • Miseglia quarrying basin (Miseglia-Fantiscritti quarrying basin; Fantiscritti quarrying basin)
          • Fantiscritti
Armando del Taglia find & collection +1 other reference
        • Torano quarrying basin
Orlandi (2004) +1 other reference
  • Veneto
    • Vicenza Province
      • Recoaro Terme
        • Civillina Mountain
[Zaccagnaite-3R] Zorzi F. et al. (2014)
Peru
 
  • Amazonas
    • Bongará Province
      • Yambrasbamba
        • Bongara Project
[Zaccagnaite-3R] Arfè et al. (2017)
Spain
 
  • Cantabria
    • Sierra de Arnero
      • La Florida mining area
[Zaccagnaite-3R] Lozano et al. (2012)
Switzerland
 
  • Valais
    • Sierre
      • Anniviers
Ansermet et al. (2021)
Ansermet et al. (2021)
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