Mineralpedia Details for Effenbergerite
Effenbergerite
Named for mineralogist and crystallographer at the University of Vienne, Dr. Herta S. Effenberger. A rare mineral that can be found only at the type locality at the Wessels mine in the Northern Cape Province of South Africa. It is found with native copper, calcite, quartz, and clinozoisite within veinlets of pectolite that are embedded in braunite ore. Effenbergerite appears as blue plates.
Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)
IMA/CNMNC List of Mineral Names (2009) and Mineralogical Magazine 58 (1994) 663
- Formula
- BaCuSi4O10
- Crystal System
- Tetragonal
- Crystal Habit
- Platy
- Cleavage
- Perfect, Poor, None
- Luster
- Vitreous - Resinous
- Color
- blue
- Streak
- pale blue
- Class
- Tetragonal - Ditetragonal Dipyramidal
- Fracture
- Brittle
- Hardness
- 4-5
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Effenbergerite from Wessels mine, Hotazel, Kalahari Mn fields, Northern Cape Province, South Africa
Rich blue, prismatic crystals to 3mm embedded in matrix with Sugilite.
Granular Effenbergite crystals in matrix.
Click thumbnail images for larger view.
