Bavenite
Mineral Ca4Be2Al2Si9O26(OH)2
About it
White fibrous or bladed beryllium mineral that often replaces beryl in pegmatites; named for Baveno, Italy, and also found at California's Himalaya mine.
- Type
- Mineral
- Group
- Silicate (inosilicate)
- Formula
- Ca4Be2Al2Si9O26(OH)2
- Hardness (Mohs)
- 5.5–6
- Specific gravity
- 2.71–2.74
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Orthorhombic
- Colours
- colourless, white
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction, fair in another
Typical values: real specimens vary. For more, see mindat.org.