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Zaccagnaite

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Formula:
Zn4Al2(OH)12[CO3] · 3H2O
Colour:
White
Lustre:
Sub-Vitreous
Crystal System:
Hexagonal
Name:
For Domenico Zaccagna (1851-1940), 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.
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Classification of ZaccagnaiteHide

Approved
Approval Year:
1997
5.DA.45

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

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

Physical Properties of ZaccagnaiteHide

Sub-Vitreous
Transparency:
Transparent
Colour:
White
Streak:
White

Optical Data of ZaccagnaiteHide

Type:
Uniaxial

Chemical Properties of ZaccagnaiteHide

Formula:
Zn4Al2(OH)12[CO3] · 3H2O
IMA Formula:
Zn4Al2(OH)12(CO3) · 3H2O

Crystallography of ZaccagnaiteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Zaccagnaite-2HZaccagnaite-3R
  
Hexagonal Trigonal 
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal3m (3 2/m) - Hexagonal Scalenohedral
P63/mmc R3m
  
a = 3.0725 Å, c = 15.114 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
  

Type Occurrence of ZaccagnaiteHide

Synonyms of ZaccagnaiteHide

Other Language Names for ZaccagnaiteHide

Relationship of Zaccagnaite to other SpeciesHide

Other Members of this group:
CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig.
CharmariteMn2+4Al2(OH)12[CO3] · 3H2O
ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
QuintiniteMg4Al2(OH)12[CO3] · 3H2OHex. 6 2 2 : P63 2 2

Common AssociatesHide

Associated Minerals Based on Photo Data:
Zincowoodwardite1 photo of Zaccagnaite associated with Zincowoodwardite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl·6H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon.
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon.
5.DA.05UM1986-10-CO:ClHMgMnZnMg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon.
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex.
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon.
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14·7H2OTric.
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OHex.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig.
5.DA.40QuintiniteMg4Al2(OH)12[CO3] · 3H2OHex. 6 2 2 : P63 2 2
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex.
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex.
5.DA.45Pyroaurite-2HMg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
5.DA.50HydrotalciteMg6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
5.DA.50StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig.
5.DA.50UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig.

Related Minerals - Dana Grouping (8th Ed.)Hide

16b.6.1.1Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex.
16b.6.1.2Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex.
16b.6.1.3Pyroaurite-2HMg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc

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.

References for ZaccagnaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Merlino, 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, 1293-1301.
Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.

Internet Links for ZaccagnaiteHide

Localities for ZaccagnaiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Belgium
 
  • Liège Province
    • Verviers
      • Plombières-Vieille Montagne-Moresnet (Plombières-Altenberg-Moresnet) mining district
        • Lontzen
          • Walhorn
Bulletin de la Société Royale des Sciences de Liège, Vol. 85, 2016, p. 30 - 55 Minéralogie de l’ancienne mine plomb-zinc de
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
No reference listed
            • Hilarion area
T. Witzke & G. Raade (2000) Neues Jahrbuch für Mineralogie, Monatshefte, 455-465
Italy
 
  • Tuscany
    • Massa-Carrara Province
      • Apuan Alps
Orlandi, P. & Criscuolo, A. (2009). Minerali del marmo delle Alpi Apuane. Pacini editore, Pisa, 180 pp.
S. Merlino & P. Orlandi (2001): Carraraite and zaccagnaite, two new minerals ..... Amer. Miner. 86, 1293-1301
  • Veneto
    • Vicenza Province
      • Recoaro Terme
        • Civillina Mt.
[Zaccagnaite-3R] Zorzi F., Boscerdin M., Rocchetti I. (2014): Zaccagnaite-3R del Monte Civillina, Recoaro Terme (Vicenza). GMT 2014 Giornate Mineralogiche di Tavagnasco, 6-8 giugno 2014. Plinius, 40, 154.
Spain
 
  • Cantabria
    • Sierra de Arnero
      • La Florida mining area
[Zaccagnaite-3R] Lozano, R.P., Rossi,C., La Iglesia, A. y Matesanz, E. (2012). Zaccagnaite-3R, a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain). American Mineralogist, 97, 513–523,
Mineral and/or Locality  
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