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Zapot pegmatite, Gillis Range, Fitting District, Mineral Co., Nevada, USA
© 2008 Jesse Crawford
|System:||Monoclinic||Colour:||Cream, pale buff|
|Lustre:||Greasy||Hardness:||2½ - 3|
|Name:||Named after William B. "Skip" Simmons (b. 1943), University of New Orleans, New Orleans, Louisiana, U.S.A., specialist in the mineralogy and petrology of granitic pegmatites, especially those of Colorado and of NYF type.|
This page provides mineralogical data about Simmonsite.
Classification of Simmonsite
|Strunz 8th edition ID:||3/B.03-25|
|Nickel-Strunz 10th (pending) edition ID:||3.CB.15|
3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
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Type Occurrence of Simmonsite
|Type Locality:||Zapot pegmatite, Gillis Range, Fitting District, Mineral Co., Nevada, USA|
Physical Properties of Simmonsite
|Diaphaneity (Transparency):||Transparent, Translucent|
|Colour:||Cream, pale buff|
|Hardness (Mohs):||2½ - 3|
Crystallography of Simmonsite
Optical Data of Simmonsite
|RI values:||nα = 1.359 nβ = 1.359 nγ = 1.359|
|Maximum Birefringence:||δ = 0.000|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Dispersion:||r < v weak|
Chemical Properties of Simmonsite
|Essential elements:||Al, F, Li, Na|
|All elements listed in formula:||Al, F, Li, Na|
Relationship of Simmonsite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
Other Names for Simmonsite
|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 Simmonsite
American Mineralogist (1999): 84: 769-772.
Internet Links for Simmonsite
Localities for Simmonsite
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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