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Chromium-bearing Alumohydrocalcite

A variety of Alumohydrocalcite
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04982850017841609108489.jpg
Chromium-bearing Alumohydrocalcite

Mount Hamilton, Black Wonder Mining District, Santa Clara County, California, USA
04982850017841609108489.jpg
Chromium-bearing Alumohydrocalcite

Mount Hamilton, Black Wonder Mining District, Santa Clara County, California, USA
08857130017827947038056.jpg
Chromium-bearing Alumohydrocalcite

Mount Hamilton, Black Wonder Mining District, Santa Clara County, California, USA
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About Chromium-bearing AlumohydrocalciteHide

Formula:
Ca(Al,Cr)2(CO3)2(OH)4 · 4H2O
A chromium-bearing variety of alumohydrocalcite.
Cr-dominant samples are grguricite.


Unique IdentifiersHide

Mindat ID:
11372 (as Chromium-bearing Alumohydrocalcite)
157 (as Alumohydrocalcite)
Long-form identifier:
mindat:1:1:11372:6 (as Chromium-bearing Alumohydrocalcite)
mindat:1:1:157:3 (as Alumohydrocalcite)

Chemistry of Chromium-bearing AlumohydrocalciteHide

Mindat Formula:
Ca(Al,Cr)2(CO3)2(OH)4 · 4H2O
Element Weights:
Element% weight
O63.248 %
Al15.237 %
Ca11.317 %
C6.783 %
H3.415 %

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

Synonyms of Chromium-bearing AlumohydrocalciteHide

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Chromium-bearing Alumohydrocalcite associated with AlumohydrocalciteCaAl2(CO3)2(OH)4 · 4H2O
1 photo of Chromium-bearing Alumohydrocalcite associated with QuartzSiO2
1 photo of Chromium-bearing Alumohydrocalcite associated with 'Nickel-bearing Serpentine'D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

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 Chromium-bearing AlumohydrocalciteHide

References for Chromium-bearing AlumohydrocalciteHide

Localities for Chromium-bearing AlumohydrocalciteHide

Showing 3 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.
Japan
 
  • Gunma Prefecture
    • Fujioka City
Yamada (2004)
USA
 
  • California
    • Santa Clara County
      • Black Wonder Mining District
        • Mount Hamilton
Cooper et al. (1975) +2 other references
    • Stanislaus County
      • Orestimba Mining District
        • Rooster Comb
Dunning (2000)
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