Xonotlite
Italy
2.73 carats
© Rarestone.com
Xonotlite forms translucent needle-like chalky white to bluish grey crystals or fibrous masses.
Crystals of gem-quality are very rare.
Xonotlite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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| General Information | ||||||||||||||||||
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| Chemical Formula |
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| Physical Properties of Xonotlite | ||||||||||||||||||
| Mohs Hardness | 6 to 6.5, Gems, Sixth Edition (2006) | |||||||||||||||||
| Specific Gravity | 2.71 to 2.72, Gems, Sixth Edition (2006) | |||||||||||||||||
| Cleavage Quality | Perfect, Gems, Sixth Edition (2006) | |||||||||||||||||
| Fracture | Splintery, Handbook of mineralogy (2001) | |||||||||||||||||
| Optical Properties of Xonotlite | ||||||||||||||||||
| Refractive Index | 1.581 to 1.593, Gems, Sixth Edition (2006) RI for the alpha, beta and gamma rays is 1.581–1.583, 1.581–1.583 and 1.591–1.593 | |||||||||||||||||
| Optical Character | Biaxial/+, Gems, Sixth Edition (2006) | |||||||||||||||||
| Birefringence | 0.010, Gems, Sixth Edition (2006) | |||||||||||||||||
| Colour | ||||||||||||||||||
| Colour (General) | Chalky white to bluish grey, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Transparency | Translucent, Gems, Sixth Edition (2006) | |||||||||||||||||
| Lustre | Pearly,Greasy, Handbook of mineralogy (2001) | |||||||||||||||||
| Crystallography of Xonotlite | ||||||||||||||||||
| Crystal System | Monoclinic,Triclinic, Gems, Sixth Edition (2006) | |||||||||||||||||
| Habit | Needle-like crystals or fibrous masses, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Geological Environment | ||||||||||||||||||
| Where found: | Xonotlite occurs in contact metamorphic deposits within limestones and serpentines., Gems, Sixth Edition (2006) | |||||||||||||||||
| Further Information | ||||||||||||||||||
| Mineral information: | Xonotlite information at mindat.org | |||||||||||||||||
| Significant Gem Localities | ||||||||||||||||||
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