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Beryllium vesuvianite

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Formula:
(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Colour:
Medium to dark brown
Lustre:
Vitreous, Sub-Vitreous
Hardness:
Specific Gravity:
3.385
Name:
Named in 1935 by Charles Palache and Lawson H. Bauer for a vesuvianite with high BeO substitution. (Although original analyses varied up to 9% BeO, modern verified chemical analyses could have yielded a new species, but modern chemical analysts have not found a similarly high BeO-rich sample as was analyzed historically.)
A variety of Vesuvianite

Vesuvianite with an unexpectedly high content of BeO. Analyses vary up to 9% BeO. Crystals are simple elongated prisms [001], showing {111}, {100}, and {110}.
Synonymous with Beryllian Vesuvianite.


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Physical Properties of Beryllium vesuvianiteHide

Vitreous, Sub-Vitreous
Transparency:
Transparent, Translucent
Colour:
Medium to dark brown
Streak:
White
Hardness:
6½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Poor on {110}
Very poor on {100} {001}
Fracture:
Sub-Conchoidal
Density:
3.385 g/cm3 (Measured)    

Chemical Properties of Beryllium vesuvianiteHide

Formula:
(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10

Fluorescence of Beryllium vesuvianiteHide

Not fluorescent in UV

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Beryllium vesuvianiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Palache, Charles and Bauer, Lawson H. (1931): On the Occurrence of Beryllium in the Zinc Deposits of Franklin, New Jersey. American Mineralogist, 15, 30-33.
Palache, C. (1935): The Minerals of Franklin and Sterling Hill, Sussex County, New Jersey, U.S. Geological Survey Professional Paper 180, 135pp., with map.
Hurlbut, Cornelius (1955)

Internet Links for Beryllium vesuvianiteHide

 
Mineral and/or Locality  
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