Difference between revisions of "Scapolite"
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Revision as of 06:41, 24 July 2013
Description
Any of several fluorescent silicates used as gemstones. Scapolites are transparent to translucent stones that occur in pastel shades of yellow, pink, lavender and cat's eye. Two types of scapolites are: marialite (sodium aluminosilicate), and meionite (calcium aluminosilicate). Scapolites are mined in Myanmar (formerly Burma), East Africa, Sweden (Kiruna), Australia (Queensland), Canada (Quebec, Ontario-yellow), the U.S. (New York, New Jersey, Pennsylvania) and Mexico (Oaxaca-white).
Synonyms and Related Terms
wernerite (former group name); marialite; meionite; sodalite; dipyre (now used for the marialite-rich variety); mizzonite (now used for the meionite-rich variety); escapolite (Port.)
Other Properties
Short, square prismatic crystals. Cleavage is distinct in two directions. Fluorescent.
Streak = white. Luster = vitreous. Fracture = conchoidal to uneven.
| Mohs Hardness | 5.0 - 6.0 |
|---|---|
| Density | 2.3-2.8 |
| Refractive Index | 1.483 - 1.600 |
Additional Information
Mineralogy Database: Scapolite