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Cordierite
Cordierite - Mineral Properties and Uses |
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Uses |
Cordierite uses include: gems, ceramics. |
Color |
various shades of blue to bluish gray |
Streak |
colorless |
Luster |
vitreous |
Diaphaneity |
transparent to translucent |
Cleavage |
poor |
Hardness |
7 - 7.5 |
Specific Gravity |
2.5 - 2.8 |
Distinguishing
Characteristics |
resembles quartz |
Crystal System |
orthorhombic |
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Cordierite from Madagascar.
This specimen is approximately 1 inch (2.5 centimeters) across.
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