Hedenburgite was named for M. A. Ludwig Hedenberg, the man who first discovered it. It is the iron (Fe) rich member of a series that also includes diopside (more Mg) and augite (Ca, Fe, Mg & Al). As seen in this specimen, hedenburgite crystals often appear as cubes although the mineral itself is monoclinic. Both hedenburgite and augite are common minerals in metamorphic rocks.
| CaFeSi2O6 |
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| Inosilicates |
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| Monoclinic |
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| 2/m |
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| 5-6 |
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| 3.55 |
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| Conchoidal |
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| Black |
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| Greenish-white |
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| Vitreous, pearly |
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| Transparent/translucent/opaque |
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