Jarosewichite [SEP] named after
. It always occurs with flinkite, franklinite, andradite and cahnite. The mine specimen has a stratified crust of vugs from metamorphosed zinc orebody. There are some small crystals of hausmannite, allactite and cahnite on the vugs, which formed with jarosewichite.
Biographic sketch.
Jarosewichite was named in honor of Eugene Jarosewich (1926–2007), a chemist in the Department of Mineral Sciences of Smithsonian Institution, Washington, D.C., US. Gene was known in the instrumental analysis of rocks and minerals, especially in wet chemical analyses of
Jarosewichite
Jarosewichite is a rare manganese arsenate mineral with formula: MnMn(AsO)(OH). It was first described in Franklin, New Jersey which is its only reported occurrence. Its chemical composition and structure are similar to chlorophoenicite. This mineral is orthorhombic with 2/m2/m2/m point group. Its crystals are prismatic or barrel-shaped. The color of jarosewichite is dark red to black. It has subvitreous luster of fracture surfaces and reddish-orange streak. This mineral occurs with flinkite, franklinite, andradite and cahnite.