| Hypersthene Mineral Data |
General Hypersthene Information |
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| (Mg,Fe++)2Si2O6 | |||
| Molecular Weight = 232.32 gm | |||
| Magnesium 10.46 % Mg 17.35 % MgO | |||
| Iron 24.04 % Fe 30.93 % FeO | |||
| Silicon 24.18 % Si 51.73 % SiO2 | |||
| Oxygen 41.32 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| MgFe2+Si2O6 | |||
| Minerals of basic igneous rocks and meteorites. Intermediate in composition between enstatite and ferrosilite | |||
| Discredited IMA 1988 | |||
| Dark plutonic rocks of the Adirondack Mountain region of New York, especially the North Creek garnet occurrences. Link to MinDat.org Location Data. | |||
| From in the Greek hyper - "above" and stenos - "power." | |||
| Bronzite | |||
Hypersthene Image | |||
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Hypersthene Crystallography |
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| a:b:c =2.0611:1:0.5889 | |||
| a = 18.2, b = 8.83, c = 5.2, Z = 8; V = 835.67 Den(Calc)= 3.69 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) | |||
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Mouse |
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Physical Properties of Hypersthene |
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| [100] Perfect, [010] Perfect | |||
| Grayish white, Greenish white, Yellowish white, Bronzy brown, Grayish black. | |||
| 3.2 - 3.9, Average = 3.55 | |||
| Translucent to transparent | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Crystalline - Coarse - Occurs as well-formed coarse sized crystals. | |||
| Massive - Granular - Common texture observed in granite and other igneous rock. | |||
| 5.5-6 - Knife Blade-Orthoclase | |||
| None. | |||
| Vitreous - Silky | |||
| grayish greenish white | |||
Optical Properties of Hypersthene |
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| CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1949,KPDmeas= 0.2025,KC= 0.2004 |
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| Biaxial (-), a=1.669-1.755, b=1.674-1.763, g=1.68-1.773, bire=0.0110-0.0180, 2V(Calc)=86, 2V(Meas)=70-90. Dispersion weak, r < v. | |||
| pink, brownish pink, pale yellow, pale red, or colorless. | |||
| pinkish yellow, greenish yellow, yellow, light green, or colorless. | |||
| light green, bluish green, grayish green, blue, or colorless. | |||
Calculated Properties of Hypersthene |
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relectron=3.48 gm/cc |
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| Fermion Index = 0.02704 Boson Index = 0.97296 |
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PEHypersthene = 8.29 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hypersthene is Not Radioactive |
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Hypersthene Classification |
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| 65.0.0.0 (65)Inosilicate Minerals | |||
| (65.0)Without Dana Classification Numbers | |||
| (Pyroxenes, Ortho) | |||
| VIII/F.02-00 VIII - Silicates | |||
| VIII/F - Inosilicates (chain and band) double chains [Si2O6]4- | |||
| VIII/F.02 - Pyroxene group, Orthopyroxene | |||
Other Hypersthene Information |
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| NAME( Pough60) PHYS. PROP.(Pough60) OPTIC PROP.(Heinrich65) | |||
| Links to other databases for Hypersthene : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 - Mineral and Gemstone Kingdom 12 -Mineralienatlas (Deutsch) 13 - Minerals in Thin Section-University of North Carolina 14 -QUT Mineral Atlas 15 - UCLA - Petrography Thin-Sections 16 - WWW-MINCRYST Search for Hypersthene using: Visit our Advertisers for Hypersthene : Translate Hypersthene Mineral Data : Ask about Hypersthene here : Print or Cut-and-Paste your Hypersthene Specimen Label here :
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