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Zaccagnaite

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Hilarion Mine (Hilarion adit; Hilarion Mine No. 50), Hilarion area, Kamariza Mines (Kamareza Mines), Agios Konstantinos [St Constantine] (Kamariza), Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece
© Thomas Witzke

Formula:
Zn
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
·3H
 
2
O
System:HexagonalColour:White
Lustre:Sub-Vitreous
Name:For Domenico Zaccagna (1851-1940), a scholar and mineral collector who specialized in the geology and mineralogy of the Carrara marbles of the of the Apuan Alps of northern Tuscany, Italy - where the species was discovered.


Hydrotalcite Group

Classification of Zaccagnaite

IMA status:Approved 1997
Strunz 9th edition ID:5.DB.45
Nickel-Strunz 10th (pending) edition ID:5.DA.45

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th edition ID: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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Type Occurrence of Zaccagnaite

Type Locality:Calagio Quarry, Carrara, Apuan Alps, Massa-Carrara Province, Tuscany, Italy

Physical Properties of Zaccagnaite

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

Crystallography of Zaccagnaite

Crystal System:Hexagonal

Optical Data of Zaccagnaite

Type:Uniaxial

Chemical Properties of Zaccagnaite

Formula:
Zn
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
·3H
 
2
O
Essential elements:Al, C, H, O, Zn
All elements listed in formula:Al, C, H, O, Zn

Relationship of Zaccagnaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.DA.05Dypingite
Mg
 
5
[OH|(CO
 
3
)
 
2
]
 
2
 · 5H
 
2
O
5.DA.05Giorgiosite
Mg
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 4H
 
2
O
5.DA.05Hydromagnesite
Mg
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 4H
 
2
O
5.DA.05Widgiemoolthalite
Ni
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 5H
 
2
O
5.DA.05UM1986-10-CO:ClHMgMnZn
Mg
 
5
(Zn,Mn)
 
3
(CO
 
3
)
 
2
(OH,Cl)
 
12
·H
 
2
O
5.DA.05UM1987-01-CO:HMgS
Mg
 
4
(CO
 
3
)
 
2
(OH)
 
2
·6H
 
2
O ?
5.DA.10Artinite
Mg
 
2
[(OH)
 
2
|CO
 
3
] · 3H
 
2
O
5.DA.10Indigirite
Mg
 
2
Al
 
2
[(CO
 
3
)
 
4
(OH)
 
2
] · 15H
 
2
O
5.DA.10Chlorartinite
[Mg
 
2
(CO
 
3
)(H
 
2
O)(OH)]Cl · H
 
2
O
5.DA.15Otwayite
Ni
 
2
CO
 
3
(OH)
 
2
·H
 
2
O
5.DA.15Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
·4H
 
2
O
5.DA.20Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
·3H
 
2
O
5.DA.25Callaghanite
Cu
 
2
Mg
 
2
[(OH)
 
6
|CO
 
3
] · 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
[(OH)
 
4
|CO
 
3
] · 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
·nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(OH)
 
13
CO
 
3
·5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
[(OH)
 
12
|CO
 
3
] · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(OH)
 
12
CO
 
3
H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
[(OH)
 
12
|CO
 
3
] · 3H
 
2
O
5.DA.45Barbertonite
Mg
 
6
(Cr,Al)
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
[(OH)
 
13
|CO
 
3
] · 4H
 
2
O
5.DA.45Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
[(OH)
 
12
|(Cl
 
2
,CO
 
3
)] · 2H
 
2
O
5.DA.45Manasseite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Sjögrenite
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Comblainite
(Ni
 
x
,Co
 
1-x
)(OH)
 
2
(CO
 
3
)
 
(1-x)/2
·nH
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Stichtite
Mg
 
6
Cr
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Takovite
Ni
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50UM1998-10-CO:CoHNi
Co
 
6
Fe
 
2
CO
 
3
(OH)
 
16
·4H
 
2
O ?
5.DA.55Coalingite
Mg
 
10
Fe
3+
2
[(OH)
 
24
|CO
 
3
] · 2H
 
2
O

Other Names for Zaccagnaite

Synonyms:
IMA1997-019
Other Languages:
German:Zaccagnait
Russian:Дзаккагнаит
Spanish:Zaccagnaita

Other Information

Health Warning: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.

Internet Links for Zaccagnaite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Zaccagnaite in the Natural History Museum (London) online catalogue
  • Zaccagnaite details from Handbook of Mineralogy (PDF)
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    Localities for Zaccagnaite

    (TL) indicates type locality. ? 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 (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • 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
          • Carrara
    		S. Merlino & P. Orlandi (2001): Carraraite and zaccagnaite, two new minerals ..... Amer. Miner. 86, 1293-1301
    Mineral and/or Locality
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