Malachite stalactites from Mashamba

Primary Malachite forms an intriguing specimen of stalactites of fibrous crystals, alongside rounded tops.

Malachite | ‪#‎Geology

Formula: Cu2(CO3)(OH)2
System: Monoclinic
Colour: Bright green, alongside …
Hardness: 3½ – iv
Streak: Light green

Malachite is a green, really mutual secondary copper mineral alongside a widely variable habit. Typically it is constitute every bit crystalline aggregates or crusts, ofttimes banded inward appearence, similar agates. It is likewise ofttimes constitute every bit botryoidal clusters of radiating crystals, in addition to every bit mammillary aggregates every bit well.

From Mashamba West Mine DR Congo (Zaire)