Orpiment
| ID | 158 | |
|---|---|---|
| Mineral | Orpiment | |
| Location | Casapalca Mine - Casapalca - Huarochiri - Peru | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Orpiment information at mindat.org |
|
Mindat data
| ID | 3021 |
|---|---|
| Long ID | 1:1:3021:8 |
| Formula |
As2S3
|
| IMA Status |
0 1 |
| Other Occurrences | In low-temperature hydrothermal veins, hot springs and fumaroles; also commonly as an alteration product of arsenic minerals, especially realgar. |
| Diapheny | Transparent |
| Cleavage | Perfect {010} imperfect {100} |
| Tenacity | sectile |
| Colour | Orange-yellow to lemon-yellow |
| Hardness (min) | 1.5 |
| Hardness (max) | 2.0 |
| Luminescence | None |
| Lustre | Pearly and adamantine splendent |
| About the name | From Latin "aurum", gold, and "pigmentum", pigment, in allusion to its color. |
| Streak | Light lemon yellow |
| Crystal System | Monoclinic |
| Cleavage Type | Perfect |
| Morphology | Commonly in foliated columnar or fibrous aggregates, with cleavages as much as 60 cm across; may be reniform or botryoidal; also granular or powdery; rarely as prismatic crystals. |
| Twinning | On {100} |
| Thermal Behaviour | Heated in a closed tube it fuses, volatizes and gives a dark yellow sublimate. |
| key_elements |
0 |
| shortcode_ima | Orp |
Details
Price: € 10
Dimensions: Not registered
Weight: 26 g
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| As | Arsenic |
|
| S | Sulfur |