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Product/Service >> Rocks Minerals >> Mineral Carborundum

Mineral Carborundum - คลิกที่นี่เพื่อดูรูปภาพใหญ่
Mineral Carborundum






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Mineral Carborundum - คลิกที่นี่เพื่อดูรูปภาพใหญ่

Mineral Carborundum - คลิกที่นี่เพื่อดูรูปภาพใหญ่

Mineral Carborundum - คลิกที่นี่เพื่อดูรูปภาพใหญ่

Mineral Carborundum - คลิกที่นี่เพื่อดูรูปภาพใหญ่

Mineral Carborundum - คลิกที่นี่เพื่อดูรูปภาพใหญ่

Mineral Carborundum

Code: 000029
Price: 8,000.00 THB (Ref. 7,000.00 USD)
Description: Mineral Carborundum

This spikey, irridescent material is not natural. Most specimens are man-made silicon carbide, manufactured for use as an abrasive, or when gemmy, as a diamond simulant. It occurs naturally in meteorites, where it is called moissanite. The localities for these "specimens" may be Mexico, Schenectady (New York) or others. Do not confuse carborundum with corundum (aluminum oxide) or its colored varieties ruby and sapphire.

PHYSICAL CHARACTERISTICS:
• Color ranges from dark green to black.
• Luster is vitreous.
• Diaphaneity is transparent to translucent.
• Crystal System is monoclinic;C2/m.
• Crystal Habits include acicular crystals to 5mm.
• Cleavage {110} is perfect.
• Fracture is uneven to subconchoidal.
• Hardness is 5 - 6.
• Specific Gravity is approximately 3.2 g/cm3.
• Streak is white.
• Associated Minerals include anatase, brookite, calcite, elpidite and quartz.
• Distinguishing Features: Crystal habit.
• Origin: Named in 1794 from the Greek aktis, a ray, in allusion to its common occurrence as radiating needles.

ACTINOLITE
(Ca,Na) 2 (Mg,Fe) 5Si 8 O 22( OH) 2
Monoclinic, C2/m, a = 9.851, b = 18.143, c = 5.295 Å,
 = 104.47o, Z = 2
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