Arrojadite Minerals.pdf

AM35_59.pdf
Preview of Arrojadite Minerals
🔗 Source: rruff.info
📊 Size: 1.16 MB
📄 Pages: 18 pages
⬇️ Downloads: 127

Summary

Arrojadite from the Nickel Plate mine and Serra Branca pegmatite has been reexamined and found to be identical. New optical properties of arrojadite are given: a=1.664, β=1.670, γ=1.675, with X colorless, Y pale green, Z pale yellow green. The space group is C2/m, with unit cell dimensions a=16.60, b=10.02, c=23.99 Å. Material from Hühnerkobel and Norrö, previously described as arrojadite, is not isostructural and is named hühnerkobelite, with formula (Na,Ca)O.2(Fe,Mn)O.P2O5. Graftonite, associated with arrojadite, has optical properties: a=1.709, β=1.714, γ=1.736, with X colorless, Y colorless, Z pink. The space group is P2/c, with unit cell dimensions a=8.87, b=11.57, c=6.77 Å.

Description

Arrojadite from the Nickel Plate mine and Serra Branca pegmatite has been reexamined and found to be identical.

Technical Information

  • File Format: PDF
  • File Size: 1.16 MB
  • Pages: 18
  • Language: EN
  • Total Downloads: 127
  • Last Updated: 1 month ago

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