Properties
| Category | Chromate minerals |
|---|---|
| Formula | Lead Chromate PbCrO4 |
| Crystal system | Monoclinic |
| Color | Orange, red, yellow; orange-red in transmitted light. |
| Crystal habit | Coarsely crystalline to acicular |
| Cleavage | Distinct on {110} indistinct on {001} and {100} |
| Fracture | Conchoidal to uneven |
| Tenacity | Sectile |
| Mohs scale hardness | 2.5–3 |
| Luster | Adamantine, Sub-Adamantine, Sub-Vitreous, Resinous, Waxy |
| Streak | Yellowish orange |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 5.9–6.1 |
From the Wikipedia article
Crocoite is a mineral consisting of lead chromate, PbCrO4, and crystallizing in the monoclinic crystal system. It is identical in composition with the artificial product chrome yellow used as a paint pigment.
Source
Source record: crystal-compendium/crocoite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Crocoite — revision id 1363476663. Text and properties from Wikipedia, licensed CC BY-SA 4.0.