Hemimorfita
TCSS-159
"Galmei" = Hemimorfita + Smithsonita
Zn4(Si2O7)(OH)2.H2O + ZnCO3
https://en.wikipedia.org/wiki/Calamine_(mineral) Calamine is a historic name for an ore of zinc. The name calamine was derived from lapis calaminaris, a Latin corruption of Greek cadmia (καδμία), the old name for zinc ores in general. In the 18th and 19th centuries large ore mines could be found near the German village of Breinigerberg. ..... the two minerals exhibit similar massive or botryoidal external form[1][2] and are not readily distinguished without detailed chemical or physical analysis.
Localidad: Stolberg cerca de Aachen?
Usos: Mena secundaria de zinc, antes mena importante para formar junto con cobre laton (aleación Cu+Zn)
TCSS-160
TCSS-159
Hemimorfita
Zn4(Si2O7)(OH)2.H2O
Color: Blanco amarillento
Dureza:4,5-5
Brillo: Vitreo
Fractura:Irregular
Sistema cristalino: Ortorrombico
Raya: Blanca
Densidad: 3,47 g/cm3
Minerales asociados: Calcita, limonita
Usos:Mena secundaria de Zinc