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| Product Name: |
Schorl Tourmaline
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| Supply Ability: |
more ten thousands ton |
| Related proudcts |
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| Specifications |
more |
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General Description
Schorl tourmaline is a Sodium Iron Aluminum Boro-silicate Hydroxide with a Chemistry formula: NaFe3(Al,Fe)6Si6O18(BO3)3(OH)4. Schorl is the most common mineral in the Tourmaline Group. Some other members of the Tourmaline Group are elbaite, uvite, buergerite and dravite. All tourmalines form similar crystals because they are isostructural, meaning that they share the same internal crystalline structure.
Appearance
Crystal
Origins
Notable Occurrences include China; Brazil; Colorado; Appalachian mountains; Germany; Cornwall, England; etc..
Applications
Mineral collection specimens, electrical uses and as ornamental stone.
Toxicology
Non-toxic (please refer to MSDS)
Important Properties
Shorl is black with a luster from vitreous to submetallic. Shorl crystals are opaque and the Crystal System is trigonal; 3 m. Crystal Habit is typically elongated three sided prisms. The terminations can be either a simple to complex trigonal pyramid or flat basal face. The prism faces are usually striated lengthwise. In cross section, all tourmalines will appear predominantly triangular in shape. Doubly terminated crystals are hemimorphic meaning that the two ends of the crystal are not exactly alike. Massive forms can also be found. Cleavage of shorl crystal is absent although there is basal parting. Fracture is uneven to conchoidal. The Hardness of shorl crystal is 7 - 7.5
The Specific Gravity is 3.2+ (slightly heavier than average). The Streak is white. Shorl is Piezoelectric.
In addition to the standard range of tourmaline products Great Wall Mineral can manufacture tourmaline grades tailored to customers specific requirements.
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| Company: |
Great Wall Mineral
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| Contact: |
Mr. lenny sun |
| Address: |
2208, 4th Building, Renhe Jiayuan£¬28 East Huai'an Road |
| Postcode: |
050000 |
| Tel: |
86-311-86128822 |
| Fax: |
86-311-86126662 |
| E-mail: |
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