RockVault
Variscite

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)

orthorhombicuncommonPhosphates

Variscite

AlPO₄·2H₂O

This specimen displays a vibrant apple-green to blue-green mass of variscite, likely cryptocrystalline, forming botryoidal aggregates or filling a matrix.

Variscite Physical Properties

Mohs Hardness

4

Crystal System

orthorhombic

Luster

vitreous

Streak Color

white

Cleavage

good on {010}, poor on {100} and {110}

Fracture

conchoidal

Specific Gravity

2.5

Colors

green, blue-green, yellowish-green

Transparency

translucent

Type Locality

Tonopah District, Nye County, Nevada, USA

Mineral Group

Phosphates

Uses

jewelry, ornamental stone, collector

Associated Minerals

crandallite, wavellite, chalcedony, quartz

Rarity

uncommon

Geological Context

Variscite is a secondary mineral that forms in aluminum-rich rocks, often in veins, nodules, or crusts, typically in areas altered by phosphate-rich waters. It is commonly found in association with limonite and other iron oxides.