Cordierite with Pyrite and Chalcopyrite
SOLD
Cordierite with Pyrite and Chalcopyrite
- Sold
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- Availability
- Sold
- Size
- 7 x 7 x 4.5 cm - Sm Cabinet
- Formula
- Mg2Al4Si5O18 (RRUFF)
- Locality
- Manitouwadge, Ontario, Canada
Glassy blue to blue-gray, almost gemmy Cordierite in a thick 2cm seam in sulfide rich matrix. This is an excellent Cordierite specimen with good color, subtle pleachroism and internal rainbows, but unfortunately the locality is vague and the price reflects this. Additionally there is a Black Hills Minerals label, which was operated by Bill Roberts, with the corresponding catalog number 90 on the specimen.
Cordierite
- Formula
- Mg2Al4Si5O18
- Crystal System
- Orthorhombic
- Crystal Habit
- Prismatic, Massive - Granular
- Cleavage
- Poor, None, None
- Luster
- Vitreous (Glassy)
- Color
- colorless, pale blue, violet, yellow, gray
- Streak
- white
- Class
- Orthorhombic - Dipyramidal
- Fracture
- Conchoidal
- Hardness
- 7
Data courtesy of Webmineral.
Label from Black Hills Minerals
- Mineralpedia
- View Cordierite
- On Dakota Matrix
- Previously Sold Cordierite
- On Dakota Matrix
- Other Available Cordierite
- WebMineral
- View Cordierite
- Mindat
- View Cordierite
