Adamite and Limonite
| ID | 29 | |
|---|---|---|
| Mineral |
Adamite
Limonite |
|
| Location | Ojuela Mine - Mapimi - Durango - Mexico | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Adamite information at mindat.org |
|
Mindat data
| ID | 21 |
|---|---|
| Long ID | 1:1:21:1 |
| Formula |
Zn2(AsO4)(OH)
|
| IMA Status |
0 1 |
| Other Occurrences | A secondary mineral in the oxidised zone of zinc- and arsenic-bearing hydrothermal mineral deposits. |
| Discovery Year | 1866 |
| Diapheny | Transparent,Translucent |
| Cleavage | on {101}, good; on {010}, poor. |
| Tenacity | very brittle |
| Colour | Ideally white, colourless, frequently pale yellow, honey-yellow, brownish yellow, rose red; blue, pale green to green, may be zoned; bright green (Cu-bearing); bright pink, purple (Co-bearing) |
| Hardness (min) | 3.5 |
| Hardness (max) | 3.5 |
| Luminescence | None? |
| Lustre | Vitreous |
| About the name | Named by Charles Friedel in 1866 for Gilbert Joseph Adam (7 April 1795 Seine-et-Marne, Fontainbleau, France - 8 June 1881 Paris, France), Inspector (Auditor) of Finance for the French Government, who supplied the first specimens of his mineral. Adam was a wealthy mineral collector and his mineral collection was described in Annales des Mines in 1869 and later in a published catalog (1869). Adam was also the discoverer of aerugite, chenevixite, corkite, cuprotungstite, scacchite, and xanthiosite. Adam's mineral collection was acquired by the École des Mines, Paris, France. Adam was a member of Société géologique de France and received the honor of Commandeur de la Légion d'Honneur. |
| Streak | white |
| Crystal System | Orthorhombic |
| Cleavage Type | Distinct/Good |
| Fracture type | Irregular/Uneven,Conchoidal |
| Morphology | Crystals of variable morphology. Often elongated [010], also elongated [001], rarely elongated [100]. Tabular at times {101} or equant. Commonly forms radial aggregates, fanlike rosettes or crystalline crusts. |
| UV | May fluoresce or phosphoresce lemon-yellow under SW and LW UV. |
| Thermal Behaviour | Heated in a closed tube, it decrepitates feebly, and gives a little water, becoming white and porcelanous. On charcoal, it fuses, producing a coating of zinc oxide, and a faint odor of arsenic. In a closed tube with soda and charcoal, it gives a ring of arsenic. |
| Publication Year | 1866 |
| key_elements |
0 1 |
| shortcode_ima | Ad |
| Group | Olivenite Group |
Details
Price: € 5
Dimensions: Not registered
Weight: Not registered
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| As | Arsenic |
|
| H | Hydrogen | |
| O | Oxygen | |
| Zn | Zinc |