TY - JOUR
T1 - Mawbyite, a new arsenate of lead and iron related to tsumcorite and carminite, from Broken Hill, New South Wales
AU - Pring, Allan
AU - McBriar, E. Maud
AU - Birch, William D.
PY - 1989/1/1
Y1 - 1989/1/1
N2 - Mawbyite, is a new lead iron zinc arsenate, the Fe analogue of tsumcorite, from the Kintore Opencut, Broken Hill, New South Wales, Australia. The new mineral forms drusy crusts on fractures and in small cavities in spessartine- and quartz-rich host rocks. Mawbyite has formed from the oxidation of primary sulfides and arsenides under less acidic pH conditions compared to its apparent dimorph carminite. Mawbyite crystals are usually "dogtooth' to prismatic, more rarely tabular, up to 0.2 mm long, and dominated by forms {110}, {1̄01}, and {001}. The color ranges from orange-brown (for compositions with Fe:Zn ~ 1:1) to bright reddish brown (for compositions close to the pure Fe end-member). The crystals are transparent to translucent, with adamantine luster and orange-yellow streak, are nonfluorescent, and have an estimated Mohs hardness of 4. There is a prominent cleavage on {001}; fracture is conchoidal. -from Authors
AB - Mawbyite, is a new lead iron zinc arsenate, the Fe analogue of tsumcorite, from the Kintore Opencut, Broken Hill, New South Wales, Australia. The new mineral forms drusy crusts on fractures and in small cavities in spessartine- and quartz-rich host rocks. Mawbyite has formed from the oxidation of primary sulfides and arsenides under less acidic pH conditions compared to its apparent dimorph carminite. Mawbyite crystals are usually "dogtooth' to prismatic, more rarely tabular, up to 0.2 mm long, and dominated by forms {110}, {1̄01}, and {001}. The color ranges from orange-brown (for compositions with Fe:Zn ~ 1:1) to bright reddish brown (for compositions close to the pure Fe end-member). The crystals are transparent to translucent, with adamantine luster and orange-yellow streak, are nonfluorescent, and have an estimated Mohs hardness of 4. There is a prominent cleavage on {001}; fracture is conchoidal. -from Authors
UR - http://www.scopus.com/inward/record.url?scp=0024939591&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0024939591
SN - 0003-004X
VL - 74
SP - 1377
EP - 1381
JO - American Mineralogist
JF - American Mineralogist
IS - 11-12
ER -