mineral

Pyromorphite on Epidote

Pyromorphite [Pb5(PO4)3Cl] and Epidote [Ca2(Al2,Fe3+)(SiO4)3(OH)]

AI-generated identification · may be incorrect

Hardness: 3.5-4 (Pyromorphite), 6-7 (Epidote); Color: Olive to grass green; Luster: Resinious to adamantine; Structure: Hexagonal crystals; Cleavage: Subconchoidal; Specific Gravity: 6.5-7.1

Hardness: 3
Color: Olive to grass green
Luster: Resinious to adamantine

Identified February 6, 2026More mineral →

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Physical properties

Hardness: 3.5-4 (Pyromorphite), 6-7 (Epidote); Color: Olive to grass green; Luster: Resinious to adamantine; Structure: Hexagonal crystals; Cleavage: Subconchoidal; Specific Gravity: 6.5-7.1

Formation & geological history

Secondary mineral formed in the oxidation zones of lead ore deposits, often associated with phosphate-rich fluids. Commonly found in hydrothermal veins and metamorphic rocks.

Uses & applications

Primarily used as a minor lead ore and highly valued by mineral collectors for its vibrant color and crystal habits.

Geological facts

The name Pyromorphite comes from the Greek words for 'fire' and 'form' because the mineral turns back into its crystal shape after being melted. It is part of the apatite group.

Field identification & locations

Identified by high density, green color, and hexagonal crystal shapes. Key locations include China, Germany, and Idaho, USA. Collectors should look for luster and crystal definition.