Salinite ( English Sahlinite ) is a mineral , lead arsenate with additional Cl - anions (a class of phosphates , arsenates and vanadates ). Forms scaly crystals of a grayish-yellow color. Salinit was discovered in 1934 at the Longban field , Sweden (Långban, Sweden). It is named after Karl Andreas Salin (1861-1943), a Swedish chemist and director of a metallurgical plant in Laxo (Sweden).
| Salinitis | |
|---|---|
| Formula | Pb 14 O 9 (AsO 4 ) 2 Cl 4 |
| Molecular mass | 3464.44 |
| Opening year | 1934 |
| IMA Status | valid |
| Physical properties | |
| Colour | pale yellow |
| Hardness | 2-3 |
| Cleavage | very perfect on {010} |
| Density | 7.95 g / cm³ |
| Radioactivity | 0 GRapi |
| Syngonia | Monoclinic |
| Cell options | a = 12.71Å, b = 22.49Å, c = 11.36Å; β = 118.99 ° |
| Axis ratio | a: b: c = 0.565: 1: 0.505 |
| Unit cell volume | V 2840.37 ų |
| Optical properties | |
| Optical type | biaxial (-) |
| Refractive index | n α = 3,300 |
| Maximum birefringence | 3,300 |
| Optical relief | moderate |
| Optical axis dispersion | noticeable to emergency |
Deposits
- Longban, Sweden (Långban, Sweden)
- Jakobsberg Mine, Nordmarkshüttan, Sweden (Jakobsberg Mine, Nordmarkshyttan, Sweden)
- Harstigen Mine, Persberg, Sweden (Harstigen Mine, Persberg, Sweden)
- Kombat, Namibia (Kombat, Namibia)
Literature
- Aminoff (1934) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 56: 493
- American Mineralogist (1935): 20: 315.
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 775.
- Neues Jahrbuch für Mineralogie, Monatshefte (1985): 3: 127-131.