Zinclipscombite Locality: Silver Coin Mine, Valmy, Iron Point District, Humboldt Co., Nevada, USA Pale green balls and crystal clusters of Zinclipscombite. Field of view 2,5 mm. Analysed specimen from the co-author. Specimen and photo Leon Hupperichs. — Photo: Leon Hupperichs · CC BY-SA 3.0
Zinclipscombite
A dark-green zinc-iron phosphate forming fibrous spheres in the lipscombite group.
Intro adapted from Wikipedia (CC BY-SA).
Zinclipscombite is an IMA-recognized mineral species in the phosphate class, with the chemical formula ZnFe³⁺₂(PO₄)₂(OH)₂.
It crystallizes in the tetragonal crystal system.
Key properties: Mohs hardness 5; specific gravity 3.65; Light green to beige streak; Vitreous luster; optically uniaxial.
IMA symbol Zlcb, IMA status: approved, named in 2006.
Secondary in the oxidation zone of a hydrothermal vein-type silver and base metal sulfide deposit.
It is found associated with Apophyllite, quartz, baryte, jarosite, plumbojarosite, turquoise, calcite.
The prefix identifies the zinc-dominant analogue of lipscombite.