The Prehnite can be in colors of colorless in grey, yellow, green...
The Prehnite would be the first mineral to have its name attributed in honor of a person Prehn.
To know more about the mineralogy of the Prehnite, see Mindat.org->
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Prehnite
- Translations : Prehnite , プリーナイト, Prehniet, Пренит, 葡萄石, Prehnita
- Synonym : Aedelite, Chiltonite, Coupholite, Bostrichites
- Etymology : In homage to the colonel and the Dutch collector H.Van Prehn (on 1733 - 1785).
- Discovery: 1788 by Abraham Gottlieb Werner
- Type localityCradock, Cap Province, RSA.
Gemological data
- Chemical formula : Ca2Al2Si3O10(OH)2
- Hardness (Mohs) : 6 - 6.5
- Density : 2.86 - 2.98
- Refractive index : 1.611 - 1.665
- Crystal system : Orthorhombic
- Group : Silicates
- Mineralogical Class : Inosilicates
The gallery
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- Prehnite
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- PREA0096
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- PREA0097
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- PREA0011
