Is a Copper Silicate Hydroxide with formula Cu (SiO3)4(OH)2 and hardness of 3.5.
Discovered for the first time at the Shattuck Mine near Bisbee,Arizona is quite rare copper mineral often associated with other minerals such as quartz,gold,alamosite,luddenite,fornacite,cerussite,limonite,malachite, azurite ,bisbeeite ( a variety of chrysocolla and normal chrysocolla).
This material comes from Kandesei,Kaokoveld Plateau Region,Namibia.
Size: 11.5x11.2x6.2 mm.
Weight: 4.70 ct.