Mineralienatlas - Fossilienatlas
Krotite (Krotit) |
Collectors Summary
Color | farblos |
Streak color | weiß |
Lustre | Glasglanz |
Hardness (Mohs) | 6.5~ |
Cleavages | gut (100) und (010) |
Fracture | muschelig |
Crystal System | monoklin, P21/n |
Additional information / Summary
Eines der ältesten Minerale im Sonnensystem |
Chemism
Chemical formula |
CaAl2O4 |
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Chemical composition |
Aluminium, Calcium, Sauerstoff |
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Analysis wt% |
Al2O3 : 63.50, CaO : 35.73 (Ref: American Mineralogist 2011) |
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Strunz 9th edition incl. updates |
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4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate) |
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Lapis Classification |
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IV: OXIDE |
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Classification by Hölzel |
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4: OXIDES |
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IMA status |
anerkannt CNMNC im Sept. 2010 |
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Mineral status |
anerkanntes Mineral |
Optical Properties
Crystallography
Crystal Structure 3D
Open larger view |
Physical Properties
6.5~ |
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960 (ungefähre Angabe abgeleitet aus der Mohshärte) |
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2.94 ber. |
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2.937 ( ρ calc. Mineralienatlas ) |
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gut (100) und (010) |
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muschelig |
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spröde |
(Co-)Type locality
(Co-)Type locality |
Marokko/Drâa-Tafilalet, Region/Errachidia (Er-Rachidia), Provinz/Er-Rissani, Cercle/Rissani/NWA 1934 CV3 Kohlenstoffreicher Chondrit Meteorit |
Type material |
Natural History Museum of Los Angeles County, California, USA, |
Collection number of type material |
63275 |
Preface
Author (Name, Year) |
C. Ma et al. (2011) |
References
Other languages
German |
Krotit |
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English |
Krotite |
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Simplified Chinese |
始铝钙石 |
CNMNC (IMA)-Number
IMA 2010-038 |
CNMNC symbol
Symbol |
Kro |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | hVpnzosYAEqKlMTaAO4e7g |
GUID (Global unique identifier) | CE675A85-188B-4A00-8A94-C4DA00EE1EEE |
Database ID | 6930 |