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)
triclinicuncommonPhosphates
Turquoise
CuAl₆(PO₄)₄(OH)₈·4H₂O
This specimen displays turquoise, likely in a massive or cryptocrystalline form, characterized by its distinctive blue-green color. It appears to be associated with another mineral, possibly senegalite, as indicated by the metadata.
Turquoise Physical Properties
Mohs Hardness
5Crystal System
triclinicLuster
waxyStreak Color
white to pale blue/greenCleavage
poor to noneFracture
conchoidalSpecific Gravity
2.7Colors
blue, blue-green, greenTransparency
opaqueType Locality
Mount Kourou Diakouma (Kouroudiako), Saraya, Falémé River basin, Tambacounda RegionMineral Group
PhosphatesUses
jewelry, ornamental stone, collectorAssociated Minerals
senegaliteRarity
uncommonGeological Context
Turquoise is a secondary mineral formed by the alteration of aluminum-rich igneous rocks, typically in arid regions. It precipitates from circulating groundwater that has leached copper and aluminum from surrounding rocks.
