RockVault
Azurite

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

monoclinicuncommoncarbonates

Azurite

Cu₃(CO₃)₂(OH)₂

This specimen features vibrant deep azure blue Azurite crystals, often forming botryoidal or radiating aggregates, intimately associated with bright green Malachite.

Azurite Physical Properties

Mohs Hardness

3.5

Crystal System

monoclinic

Luster

vitreous

Streak Color

light blue

Cleavage

good on {011}, poor on {100}

Fracture

conchoidal

Specific Gravity

3.8

Colors

azure blue, deep blue, sky blue

Transparency

transparent to opaque

Type Locality

Concepción del Oro, Mexico

Mineral Group

carbonates

Uses

collector, pigment, minor copper ore

Associated Minerals

malachite, cuprite, chrysocolla, native copper

Rarity

uncommon

Geological Context

Azurite is a secondary mineral that forms in the oxidation zones of copper ore deposits, typically in arid or semi-arid climates, resulting from the alteration of primary copper sulfides.