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)
orthorhombicuncommonSilicates (Borosilicates)
Danburite
CaB2(SiO4)2
This specimen displays a cluster of orange-brown Danburite crystals, which are heavily coated with a druzy layer of tiny, sparkling crystals, giving it a textured, mounded appearance.
Danburite Physical Properties
Mohs Hardness
7Crystal System
orthorhombicLuster
vitreousStreak Color
whiteCleavage
poor on {001}Fracture
conchoidal to unevenSpecific Gravity
2.97Colors
orange, brown, colorless, white, yellow, pinkTransparency
transparentType Locality
Charcas, Municipio de Charcas, San Luis Potosí, MexicoMineral Group
Silicates (Borosilicates)Uses
jewelry, collectorAssociated Minerals
quartz, calcite, feldspar, fluoriteRarity
uncommonGeological Context
Danburite typically forms in contact metamorphic rocks, especially those rich in boron, and in hydrothermal veins. It can also be found in evaporite deposits.
