Hashemite, Ba(Cr,S)O4, a new mineral from Jordan.
American Mineralogist
By: P. L. Hauff, E.E. Foord, and S. Rosenblum
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Abstract
Hashemite, Ba(Cr,S)O4, the isostructural chromate analogue of baryte, has been found in west-central Jordan. It is associated with chromian ettringite, apatite and calcite in a phosphatic carbonate rock analogous to the Hatrurim formation in Israel. The mineral is orthorhombic, Pnma, with a 9.112(2), b 5.541(1), c 7.343(1) A, Z = 4. Strongest XRD lines are 3.516(100), 3.171(80), 3.669(60), 2.175(60), 2.150(45) A. Hashemite occurs as small, euhedral, dark brown, commonly zoned crystals with an average D 4.59 g/cm3 and H. 31/2. It is biaxial positive; dark varieties have alpha 1.952(2), beta 1.960(2), gamma 1.977(2); light varieties have alpha 1.810(2), beta 1.813(2), gamma 1.824(2), 2Vgamma 35o-57o.-J.A.Z.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Hashemite, Ba(Cr,S)O4, a new mineral from Jordan. |
| Series title | American Mineralogist |
| Volume | 68 |
| Issue | 11-12 |
| Year Published | 1983 |
| Language | English |
| Publisher | Mineralogical Society of America |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | American Mineralogist |
| First page | 1223 |
| Last page | 1225 |
| Google Analytic Metrics | Metrics page |