chalcophanite

chalcophanite

[kal′käf·ə‚nīt]
(mineralogy)
(Zn,Mn,Fe)Mn2O5· n H2O A black mineral with metallic luster consisting of hydrous manganese and zinc oxide.
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Feminist goldschmidtite thermoelastolayer caique chromatid coffering increasing sensibilized unchipped chalcophanite wolfram dextrin?
Other minerals not directly associated with calderonite are: wulfenite, mimetite, cerussite, beudantite, adamite, hemimorphite, smithsonite, chalcophanite, silver, quartz and Ca-Fe carbonates.
The presence of chalcophanite at Val Graveglia, reported as doubtful by Borgo and Palenzona (1988), has not been confirmed by analytical data.
Chalcophanite occurs as microcrystals in gossan at the Brenner mine (B.
Chalcophanite occurs in an oxidized zone of the Brick 2 as metallic black drusy coatings on a gossan matrix, as minute tabular plates, and occasionally as pseudo-octahedral or (more correctly) trigonal dipyramidal crystals to I mm.
Associations include serpierite, chalcophanite, halotrichite, gypsum and other sulfates.
Chalcophanite has been verified from vuggy, iron-stained jasperoid breccias seen in the northwest corner of the 5,350 bench.
Interestingly, the first of these minerals, ernienickelite, may also occur in the Kempirsay massif, southern Urals, Russia, where it has been described as the Ni-analog of chalcophanite (American Mineralogist, 79, 388389).
Also available were some cauliflower-like groups of chalcophanite microcrystals to 2 cm with associated colorless and transparent calcite crystals; the color contrast makes for aesthetic specimens.