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Charmarite

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Formula:
Mn42+Al2(OH)12[CO3] · 3H2O
Name:
Named in 1997 by George Y. Chao and Robert A. Gault for Charles [1917-2003] and Marcelle [September 19, 1918 - 2003] Weber, amateur mineralogists of Guilford, Connecticut, USA, who contributed extensively to the knowledge of Mt. Saint-Hilaire, and who also found the mineral.
Found as the polytypes Charmarite-2H and Charmarite-3T.

Classification of Charmarite

Approved 1998
Explanation of status:
As of 1998, polytypes are no longer regarded by IMA as separate species, so Charmarite regains its species status.
5.DA.40

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
16b.7.16.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
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Type Occurrence of Charmarite

Chemical Properties of Charmarite

Formula:
Mn42+Al2(OH)12[CO3] · 3H2O
Essential elements:
All elements listed in formula:

Relationship of Charmarite to other Species

Other Members of Group:
CaresiteFe42+Al2(OH)12[CO3] · 3H2O
ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2O
ComblainiteNi4Co2(OH)12[CO3] · 3H2O
QuintiniteMg4Al2(OH)12[CO3] · 3H2O
ZaccagnaiteZn4Al2(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.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+(OH)16(CO3) · 4H2O
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2O
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2O
5.DA.50DesautelsiteMg6Mn23+(OH)16[CO3] · 4H2O
5.DA.50HydrotalciteMg6Al2(OH)16[CO3] · 4H2O
5.DA.50Pyroaurite-3RMg6Fe23+(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 Charmarite

Name in Other Languages:
German:Charmarit
Spanish:Charmarita

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 Charmarite

Reference List:
CHAO, G.Y., and GAULT, R.A. (1997) Quintinite-2H, quintinite-3T, charmarite-2H, charmarite-3T and caresite-3T, a new group of carbonate minerals related to the hydrotalcite-manasseite group. Canadian Mineralogist, 35, 1541-1549.

Mills, S. J., A. G. Christy, J.-M. R. Genin, T. Kameda, and F. Colombo (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine 76(5), 1289-1336.

Internet Links for Charmarite

Localities for Charmarite

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.
(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.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
[Charmarite-2H] Chao, G.Y., Gault, R.A. (1997), Quintinite-2H, quintinite-3T, charmarite-2H, charmarite-3T, and caresite-3T, a new group of carbonate minerals related to the hydrotalcite-manasseite group. Canadian Mineralogist, 35, 1541-1549.
Mineral and/or Locality  
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