Mathewrogersite
Mathewrogersite is an IMA-recognized mineral species in the silicate class, with the chemical formula Pb₇FeAl₃GeSi₁₂O₃₆(OH,H₂O)₆.
It crystallizes in the hexagonal crystal system.
Key properties: Mohs hardness 2; specific gravity 4.7; White streak; Vitreous, weakly pearly on cleavages luster; optically uniaxial.
IMA symbol Mwg, IMA status: approved, named in 1984.
Found in cavities of corroded Pb-Zn ores in the lower oxidation zone of a polymetallic mineral deposit.
It is found associated with Queitite, alamosite, melanotekite, kegelite, larsenite, schaurteite, anglesite, willemite, leadhillite, mimetite.
The mineral was named to honor Mathew Rogers, the first European prospector at Tsumeb, Namibia.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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