mineral

Green fluorite-bearing matrix specimen

Fluorite (calcium fluoride, CaF₂), likely with quartz and altered carbonate/silicate matrix

AI-generated identification · may be incorrect

Translucent to pale green, glassy luster, blocky cleavage surfaces and irregular crystals; fluorite has Mohs hardness 4, perfect octahedral cleavage, cubic crystal structure, and specific gravity about 3.18. The brown-gray host appears earthy and weathered.

Identified August 17, 2026More mineral →

Explore Green fluorite-bearing matrix specimen in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Fluorite commonly forms in hydrothermal veins and cavities from mineral-rich fluids, often with quartz, calcite, and sulfides; the specimen’s exact age and locality cannot be determined from the image. Common sources include China, Mexico, England, Morocco, and the United States.

Uses & applications

Used as a fluorspar source for hydrofluoric acid, aluminum and steel processing, and glassmaking; attractive crystals are collected and occasionally cut as gemstones, though fluorite is relatively soft.

Geological facts

Green fluorite is often fluorescent under ultraviolet light, commonly glowing blue, violet, or green depending on trace elements. Its excellent cleavage makes it vulnerable to chipping and damage from acids.

Field identification & locations

Identify by its green translucent cubic habit, octahedral cleavage, moderate softness, and possible UV fluorescence; distinguish it from green calcite by fluorite’s cubic geometry and lack of effervescence in dilute acid. Value is strongly locality- and clarity-dependent.