Mineralpedia Details for Brewsterite-Sr
Brewsterite-Sr
Named for Scottish mineralogist Sir David Brewster, and for its strontium content. Brewsterite-Sr is a rare mineral that is deposited hydrothermally in druses lining cavities in basalt and schist, and can be found more rarely in ore deposits. Localities for Brewsterite-Sr include at the type locality at Stronitan in Scotland, France, Russia, and Canada, among only a couple others.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/brewsterite-(Sr).pdf
- Formula
- Sr(Al2Si6)O16ยท5H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Prismatic
- Cleavage
- Perfect, None, None
- Luster
- Vitreous (Glassy)
- Color
- white, yellowish white, gray.
- Streak
- white
- Class
- Monoclinic - Prismatic
- Hardness
- 5
- WebMineral
- View Brewsterite-Sr
- Mindat
- View Brewsterite-Sr
Brewsterite-Sr from Whitesmith mine, Strontian, Scotland
White to colorless, short, stout, prismatic crystals to 1.5mm throughout matrix.
Click thumbnail images for larger view.
Brewsterite-Sr from Middleshop, Strontian, Argyllshire, Scotland
- Special Info
- Type Locality
Exceptional specimen of Brewsterite with colorless, stubby, prismatic crystals to 2.5mm. Great coverage on front and back, loaded with crystals.
Click thumbnail images for larger view.
