[view File].pdf

CM43_747.pdf
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🔗 Source: rruff.info
📊 Size: 324 KB
👤 Author: Jean-Claude C™tŽ
⬇️ Downloads: 50

Summary

Bobtraillite is a new mineral species found in igneous breccias and nepheline syenite pegmatites at Mont Saint-Hilaire, Quebec, with the chemical formula (Na,Ca)13Sr11(Zr,Y,Nb)14Si42B6O132(OH)12•12H2O. It is a complex zirconosilicate with a trigonal crystal structure, space group P¯3c1, and is associated with various minerals including burbankite-group minerals, clinoamphibole, and albite. The mineral has a Mohs hardness of 5½, is brittle, and has an uneven to conchoidal fracture. Its calculated density is 3.16 g/cm3, and it is non-pleochroic, uniaxial positive, with refractive indices of 1.627(1) and 1.645(1). The mineral's structure is composed of isolated ZrO6 octahedra linked by (Si3O9) rings, forming a pinwheel-like motif, and is considered a structural hybrid of benitoite, wadeite, and catapleiite.

Description

Bobtraillite is a new mineral species found in igneous breccias and nepheline syenite pegmatites at Mont Saint-Hilaire, Quebec, with the chemical formula...

Technical Information

  • File Format: PDF
  • File Size: 324 KB
  • Pages: 12
  • Language: EN
  • Author: Jean-Claude C™tŽ
  • Total Downloads: 50
  • Last Updated: 7 days ago

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