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Alumohydrocalcite

Big Photo

Laach lake volcanic complex, Eifel Mts, Rhineland-Palatinate, Germany
© Stephan Wolfsried

Show Alumohydrocalcite Photos (10)
Formula:
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
·3H
 
2
O
System:TriclinicColour:White, light blue, ...
Hardness:2½
Name:In allusion to the composition, containing ALUMinium, water (HYDRated) and a calcium carbonate (CALCITE) component.
This page provides mineralogical data about Alumohydrocalcite.

Classification of Alumohydrocalcite

IMA status:Approved
Strunz 8th edition ID:5/E.04-30
Nickel-Strunz 10th (pending) edition ID:5.DB.05

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
B : With large and medium-sized cations
Dana 8th edition ID:16b.2.3.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
2 : AmBn(XO3)pZqxH2O & with (m+n):p = 3:2
Hey's CIM Ref.:11.7.7

11 : Carbonates
7 : Carbonates of Al
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Type Occurrence of Alumohydrocalcite

Type Locality:Potekhina Village, Sorsk, Khakassia Republic (Khakassy Republic; Khakassiya Republic), Eastern-Siberian Region, Russia
Year of Discovery:1926
Associated Minerals at type locality:
WadVolborthiteMalachiteLimoniteCuprite
CopperAllophane

Physical Properties of Alumohydrocalcite

Diaphaneity (Transparency):Transparent, Translucent
Colour:White, light blue, violet (rare), light yellow, grey; colourless in transmitted light
Hardness (Mohs):2½
Tenacity:Brittle
Cleavage:Perfect
On {100}; on {010} imperfect.

Crystallography of Alumohydrocalcite

Crystal System:Triclinic
Morphology:Chalky masses comprised of microscopically radial-fibrous, spherulitic structures.

Optical Data of Alumohydrocalcite

Type:Biaxial (-)
RI values: nα = 1.485 - 1.502 nβ = 1.553 - 1.562 nγ = 1.570 - 1.585
2V:Measured: 64° , Calculated: 50° to 60°
Maximum Birefringence:δ = 0.085

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:r > v strong

Chemical Properties of Alumohydrocalcite

Formula:
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
·3H
 
2
O
Essential elements:Al, C, Ca, H, O
All elements listed in formula:Al, C, Ca, H, O
Common Impurities:Cr

Relationship of Alumohydrocalcite to other Species

Related Minerals - Nickel-Strunz Grouping):
5.DB.05Nasledovite
PbMn
 
3
Al
 
4
(CO
 
3
)
 
4
SO
 
4
O
 
5
·5H
 
2
O
5.DB.05Para-alumohydrocalcite
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
·6H
 
2
O
5.DB.10Dresserite
BaAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
5.DB.10Dundasite
PbAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
5.DB.10Montroyalite
Sr
 
4
Al
 
8
[(OH,F)
 
26
|(CO
 
3
)
 
3
] · 10-11H
 
2
O
5.DB.10Strontiodresserite
(Sr,Ca)Al
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
5.DB.10Petterdite
PbCr
3+
2
(CO
 
3
)
 
2
(OH)
 
4
·H
 
2
O
5.DB.10Kochsándorite
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
 · H
 
2
O
5.DB.15Hydrodresserite
BaAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · 3H
 
2
O
5.DB.20Schuilingite-(Nd)
PbCu(Nd,Gd,Sm,Y)(CO
 
3
)
 
3
(OH)·1.5H
 
2
O
5.DB.25Sergeevite
Ca
 
2
Mg
 
11
(CO
 
3
)
 
13
·10H
 
2
O
5.DB.30Szymańskiite
Hg
 
16
(Ni,Mg)
 
6
(CO
 
3
)
 
12
(OH)
 
12
(H
 
3
O)
 
8
·3H
 
2
O
Related Minerals - Hey's Index Grouping:
11.7.1Scarbroite
Al
 
5
(OH)
 
13
CO
 
3
·5H
 
2
O
11.7.2Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
·nH
 
2
O
11.7.3Dawsonite
NaAlCO
 
3
(OH)
 
2
11.7.4Hydrotalcite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
11.7.5Manasseite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
11.7.6Indigirite
Mg
 
2
Al
 
2
[(CO
 
3
)
 
4
(OH)
 
2
] · 15H
 
2
O
11.7.8Para-alumohydrocalcite
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
·6H
 
2
O
11.7.9Tunisite
NaCa
 
2
Al
 
4
(CO
 
3
)
 
4
(OH)
 
8
Cl
11.7.10Wermlandite
Mg
 
7
(Ca,Mg)(Al,Fe)
 
2
(SO
 
4
)
 
2
(OH)
 
18
(H
 
2
O)
 
12
11.7.11Montroyalite
Sr
 
4
Al
 
8
[(OH,F)
 
26
|(CO
 
3
)
 
3
] · 10-11H
 
2
O
11.7.12Dresserite
BaAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
11.7.13Hydrodresserite
BaAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · 3H
 
2
O
11.7.14Strontiodresserite
(Sr,Ca)Al
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O

Other Names for Alumohydrocalcite

Synonyms:
AluminohydrocalciteKhakassite
German names:
AluminohydrocalcitAlumohydrocalcitKhakassit
Spanish names:
AluminohydrocalcitaAlumohydrocalcitaKhakassita
Varieties:
Chromian AlumohydrocalciteKnipovichite

Other Information

Other Information:Readily soluble in acids. Decomposed by boiling water with separation of calcium carbonate and hydrous aluminum oxide.
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 Alumohydrocalcite

Reference List:Bilibine (1926) Mineralogicheskoe Obshchestvo, Leningrad, Zapiski: 55: 243.

American Mineralogist (1928): 13: 569.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 280-281.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 55: 243-258.

Neues Jahrbuch für Mineralogie, Monatshefte (1969): 130-137.

Internet Links for Alumohydrocalcite

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  • Raman and XRD data at RRUFF project
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  • Alumohydrocalcite details from Handbook of Mineralogy (PDF)
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    Localities for Alumohydrocalcite

    Hide Locality List
    The 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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    (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.
    Austria
     
    • Carinthia
      • Gailtaler Alpen & Karnische Alpen Mts
        • Kötschach-Mauthen
          • Dellach
    		G. Blass, A. Pichler: Carinthia II 193./113.:181-188 (2003)
      • Hohe Tauern Mts
        • Reißeck group
          • Gmünd
            • Radlgraben
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    France
     
    • Languedoc-Roussillon
      • Gard
        • Alzon
    Germany
     
    • North Rhine-Westphalia
      • Sauerland
        • Meschede
    		Schnorrer-Köhler, G., (1990): Ramsbeck - Neue Minerale aus dem ehemaligen Blei-Zink-Erzrevier des Sauerlandes, Der Aufschluss, Vol. 41 (4), 211-218
    • Rhineland-Palatinate
      • Eifel Mts
        • Gerolstein
          • Birresborn
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987
        • Hillesheim
    		Hentschel, G., Die Lavaströme der Graulai: eine neue Fundstelle in der Westeifel, Lapis, Weise Verlag München, 09/1993
        • Laach lake volcanic complex
          • Kruft
    		Blass, G.; Graf, H.W., Neue mineralogische Erkenntnisse und neue Funde aus Eifel, Schwarzwald und Siegerland, Mineralien-Welt 7/2, 55, 1996
          • Mendig
            • Niedermendig
    		Blass, G.; Graf, H.W., Neue mineralogische Erkenntnisse und neue Funde aus Eifel, Schwarzwald und Siegerland, Mineralien-Welt 7/2, 55, 1996
    Blass, G.; Graf, H.W., Neue mineralogische Erkenntnisse und neue Funde aus Eifel, Schwarzwald und Siegerland, Mineralien-Welt 7/2, 55, 1996
              • Wingertsberg Mt.
    		Blass, G.; Graf, H.W., Neue mineralogische Erkenntnisse und neue Funde aus Eifel, Schwarzwald und Siegerland, Mineralien-Welt 7/2, 55, 1996
    Hungary
     
    • Fejér Co.
      • Bicske-Zsámbéki Basin
        • Bicske-Csordakút
        • Mány
    		Sajó, I.E. & Szakáll, S. (2007): Canadian Mineralogist 45, 479-483.
    Italy
     
    • Tuscany
      • Grosseto Province
        • Massa Marittima
    		Sabelli C., Olmi F., Brizzi G., Meli R., 1996. Serrabottini (GR): recenti ritrovamenti nelle antiche discariche. Riv. Mineral. Ital., 19: 9-28.
      • Livorno Province
        • Piombino
    		Muenchener Micromounter-Lithothek
    Japan
     
    • Honshu Island
      • Kanto Region
        • Gunma Prefecture
          • Fujioka
    		American Mineralogist (1986): 71, 1022-1027.
      • Kinki region
        • Osaka Prefecture
    		The Mineral Species of Japan (5th ed) Matsubara
    Kyrgyzstan
     
    • Batken Oblast
    		Canadian Mineralogist: 43: 1511-1519.
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Kłodzko District
        • Nowa Ruda
    		Eligiusz Szełęg private collection
          • Przygórze
    		Hoehne K. 1953: Ein neues Vorkommen von chromhaltigen Alumohydrocalcit im niederschlesischen Bergbaugebiet. Neues Jb. Miner. Monatsh. H. 1
    Russia
     
    • Eastern-Siberian Region
      • Khakassia Republic (Khakassy Republic; Khakassiya Republic)
        • Sorsk
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 281.
    Slovakia
     
    • Košice Region
      • Slovenský kras Mts
        • Kečovo
    		Cílek V., 1999: Mineralogické výskumy v jeskyni Domica. Aragonit, 4, 9 – 11
    • Prešov Region
      • Northern Vihorlat Mts
    		Pauliš,P.,Ďuďa,R.,2002: Nejzajímavejší mineralogická naletište Slovenska. Kuttna,K.Hora, 136p
      • Ondavská vrchovina Mts
    		Bačo,P.,Pacindová,M., 1993: Whewellit a dawsonit - epigenetická mineralizácia v puklinách pieskovca pri Cígeľke. Min.Slovaca,Bratislava, 4,277-281p
    Spain
     
    • Catalonia
      • Barcelona
        • Baix Llobregat
          • Gavà
            • Bruguers
    		Bareche, E (2005) "Els minerals de Catalunya. Segle XX" Ed. Grup Mineralògic Català, Barcelona, 269 p.
        • Vallès Oriental
          • Montcada i Reixac
    		Mineralogistes de Catalunya (1997), VII (1): 34-55
    UK
     
    • England
      • Somerset
        • Cranmore
    		Turner R.W. and Rumsey, M.S. (2007) Merehead Mineralogy - an Update. Russell Soc Newsletter, No 50, pp 17-18 (March 2007)
      • South Gloucestershire (Bristol; Avon)
        • Tytherington Quarries
    		BMS Database
    USA
     
    • California
      • Santa Clara Co.
    		[var: Chromian Alumohydrocalcite]
      • Stanislaus Co.
        • Diablo Range
          • Henry Coe State Park
    		[var: Chromian Alumohydrocalcite]
    • Nevada
      • Nye Co.
        • Gabbs District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    Mineral and/or Locality
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