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Zaccagnaite

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Formula:
Zn4Al2(OH)12[CO3] · 3H2O
System:
Hexagonal
Colour:
White
Lustre:
Sub-Vitreous
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.

Classification of Zaccagnaite

Approved 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
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First Recorded Occurrence of Zaccagnaite

Physical Properties of Zaccagnaite

Sub-Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
White
Streak:
White

Crystallography of Zaccagnaite

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Zaccagnaite-2HZaccagnaite-3R
  
  
  
  


  
  
  

Optical Data of Zaccagnaite

Type:
Uniaxial

Chemical Properties of Zaccagnaite

Formula:
Zn4Al2(OH)12[CO3] · 3H2O
Essential elements:
All elements listed in formula:

Relationship of Zaccagnaite to other Species

Other Members of Group:
CaresiteFe42+Al2(OH)12[CO3] · 3H2O
CharmariteMn42+Al2(OH)12[CO3] · 3H2O
ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2O
ComblainiteNi4Co2(OH)12[CO3] · 3H2O
QuintiniteMg4Al2(OH)12[CO3] · 3H2O
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2O
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2O
5.DA.05UM1986-10-CO:ClHMgMnZnMg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)2 · 6H2O ?
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2O
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2O
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2O
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2O
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2O
5.DA.30Claraite(Cu,Zn)3(CO3)(OH)4 · 4H2O
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2O
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2O
5.DA.40CaresiteFe42+Al2(OH)12[CO3] · 3H2O
5.DA.40QuintiniteMg4Al2(OH)12[CO3] · 3H2O
5.DA.40CharmariteMn42+Al2(OH)12[CO3] · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2O
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2O
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2O
5.DA.45Pyroaurite-2HMg6Fe23+(CO3)(OH)16 · 4H2O
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2O
5.DA.50DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
5.DA.50HydrotalciteMg6Al2(OH)16[CO3] · 4H2O
5.DA.50PyroauriteMg6Fe23+(OH)16[CO3] · 4H2O
5.DA.50ReevesiteNi6Fe23+(OH)16(CO3) · 4H2O
5.DA.50StichtiteMg6Cr2(OH)16[CO3] · 4H2O
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2O
5.DA.50UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?
5.DA.55CoalingiteMg10Fe23+(OH)24[CO3] · 2H2O

Other Names for Zaccagnaite

Name in Other Languages:

Other Information

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 Zaccagnaite

Reference List:
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 Zaccagnaite

Localities for Zaccagnaite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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
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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