Hanksite
The mineral was on display, by Hanks, at the 1884 World's Industrial and Cotton Centennial Exposition at New Orleans, labelled as thenardite but noted by Hidden to be something different. Named by William Earl Hidden in 1885 in honor of Henry Garber Hanks for service as first state mineralogist of California. (Source: mindat.org)
Hanksite
Item-No.: MIN0405 Price: 175.00 EUR
Searles Lake, San Bernardino Co., California, USA
| Synonyms: | |
| Classification: | Sulfates |
| Chemical formula: | Na22K(SO4)9(CO3)2Cl |
| Crystal system: | Hexagonal |
| Density (g/cm3): | 2.562 measured, 2.585 calculated |
| Tenacity: | Brittle |
| Cleavage: | Distinct, good |
| Fracture: | Irregular, uneven |
| Hardness (Mohs): | 3 - 3.5 |
| Colour: | Colourless to grey, yellow or almost black; colourless in transmitted light |
| Lustre: | Vitreous, dull |
| Streak: | White |
| Fluorescence: | Pale yellow under LW UV |
| Transparency: | Transparent, translucent |
| Type locality: | Searles Lake, San Bernardino Co., California, USA |