Staurolite
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Details
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Staurolite is a red brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has a Mohs hardness of 7 to 7.5 and a rather complex chemical formula: (Fe,Mg,Zn)2Al9(Si,Al)4O20(OH)4. Iron, magnesium and zinc occur in variable ratios.A special property of staurolite is that it often occurs twinned in a characteristic cross-shape. In handsamples, macroscopically visible staurolite crystals are of prismatic shape. They are often larger than the surrounding minerals and are then called porphyroblasts.
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GarantieWeitere Informationen
- Allgemeine Informationen
- GTIN 09786131019074
- Genre Geowissenschaften
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Anzahl Seiten 76
- Herausgeber Betascript Publishing
- Größe H220mm x B220mm
- EAN 9786131019074
- Format Fachbuch
- Titel Staurolite
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