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Mn3(AsO4)(OH)4
Orthorhombic
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| Figure 25-26. Platy flinkite crystals from Franklin on rough-coated cahnite crystals. Field of view is 0.6 mm in maximum dimension. | ||
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Flinkite, a manganese arsenate hydroxide mineral, was reported from Franklin by Cook (1973) and verified by the writer. It occurs as 0.5-1.0 mm clusters of platy crystals (Figure 25-26) which are very dark yellow-brown with a slightly resinous luster. The composite edges of stacked crystals can appear very dark brown; the pinacoidal surface is much brighter and appears sub-semimetallic in luster. A microprobe analysis is given in Table 25.
Flinkite occurs associated with jarosewichite, cahnite, hausmannite, and romeite, in vugs in a green andradite/franklinite matrix. Additional descriptive information was provided by King (1993). Flinkite has not been reported from Sterling Hill.
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| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
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Link
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This
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