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|Colour:||Greyish white||Hardness:||5½ - 6|
Unnecessary name for member of Enstatite-Ferrosilite series; name discredited by the CNMMN Pyroxene Subcommittee (1988).
Regarded as a synonym of Enstatite or Ferrosilite, but commonly regarded as a mid-way member between these two end-members. Most "Hypersthene" is ferroan enstatite.
Visit gemdat.org for gemological information about Hypersthene. Currently in public beta-test.
Classification of Hypersthene
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Physical Properties of Hypersthene
|Streak:||Greyish white greenish|
|Hardness (Mohs):||5½ - 6|
Optical Data of Hypersthene
|RI values:||nα = 1.669 - 1.755 nβ = 1.674 - 1.763 nγ = 1.680 - 1.773|
|2V:||Measured: 70° to 90°, Calculated: 86°|
|Maximum Birefringence:||δ = 0.011 - 0.018|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Hypersthene
|Essential elements:||Mg, O, Si|
|All elements listed in formula:||Fe, Mg, O, Si|
Other Names for Hypersthene
|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 Hypersthene
Klaproth, M.H. (1810): Chemische Untersuchung des Hypersthens, Beiträge zur chemischen Kenntniss der Mineralkörper, Fünfter Band, Rottmann Berlin, 37-40
Mineralogical Magazine 52 (1988), 535.
Internet Links for Hypersthene
Localities for Hypersthene
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.