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|System:||Trigonal||Colour:||Colourless to white|
|Name:||Named after George M. Sheldrick (b 1942)Professor of Crystallography.|
This page provides mineralogical data about Sheldrickite.
Classification of Sheldrickite
|Strunz 8th edition ID:||5/E.10-05|
|Nickel-Strunz 10th (pending) edition ID:||5.DC.15|
5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
C : With large cations
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Type Occurrence of Sheldrickite
|Type Locality:||Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada|
Physical Properties of Sheldrickite
|Diaphaneity (Transparency):||Transparent, Translucent|
|Colour:||Colourless to white|
Crystallography of Sheldrickite
Optical Data of Sheldrickite
|RI values:||nω = 1.538 nε = 1.563|
|Maximum Birefringence:||δ = 0.025|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Sheldrickite
|Simplified for copy/paste:||NaCa3(CO3)2F3·H2O|
|Essential elements:||C, Ca, F, H, Na, O|
|All elements listed in formula:||C, Ca, F, H, Na, O|
Relationship of Sheldrickite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
Other Names for Sheldrickite
|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 Sheldrickite
Grice, J.D., Gault, R.A. and Van Velthuizen, J. (1997), Sheldrickite, a new sodium-calcium-fluorocarbonate mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist, 35, 181-187.
Internet Links for Sheldrickite
Localities for Sheldrickite
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.
(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.
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New Locality Added: Xiuyu District, Putian Prefecture, Fujian Province, ChinaFrom Peter Haas, 31st Oct 2014 23:31:16