Image: Photo by and (c)2015 Derek Ramsey (<a href="https://en.wikipedia.org/wiki/User:Ram-Man" class="extiw" title="en:User:Ram-Man">Ram-Man</a>) (CC BY-SA 4.0)
orthorhombicuncommonSorosilicates
Hemimorphite
Zn₄Si₂O₇(OH)₂·H₂O
This specimen displays delicate, botryoidal to radiating crystalline aggregates of light blue to greenish-blue hemimorphite, characteristic of its common growth habits.
Hemimorphite Physical Properties
Mohs Hardness
4.5Crystal System
orthorhombicLuster
vitreousStreak Color
whiteCleavage
perfect on {110}Fracture
conchoidalSpecific Gravity
3.45Colors
white, colorless, light blue, light green, brownTransparency
transparentType Locality
M'fouati (Congo), Vieille Montagne (Belgium), Santa Eulalia (Mexico), Wenshan (China)Mineral Group
SorosilicatesUses
collector, minor ore of zincAssociated Minerals
smithsonite, cerussite, anglesite, galena, sphalerite, calciteRarity
uncommonGeological Context
Hemimorphite is a secondary mineral formed in the oxidized zones of zinc-lead deposits, often found in association with smithsonite and other zinc carbonates and silicates.
