Mineralpedia Details for Cerchiaraite
Cerchiaraite
Found as dark green radiating, prismatic to acicular crystal aggregates. Forms in association with quartz, pectolite, orientate, and calcite in fractures at the type locality at the Cherchiara mine in Liguria, Italy, from which the mineral also gets its namesake. The only additional locality for Cherchiaraite is at the Woods mine in New South Wales, Australia.
Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)
- Formula
- Ba4Mn4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl
- Crystal System
- Tetragonal
- Crystal Habit
- Granular, Radial, Prismatic
- Cleavage
- None, None, None
- Luster
- Vitreous (Glassy)
- Color
- deep green
- Streak
- pale green
- Class
- Tetragonal - Ditetragonal Dipyramidal
- Fracture
- Brittle - Uneven
- Hardness
- 4-5
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Cerchiaraite from Cerchiara mine, Borghetto di Vara, La Spezia, Liguria, Italy
Dark green acicular crystals to 1mm embedded in matrix.
Click thumbnail images for larger view.
