marcasiteyou've hear about fool gold. fools gold white form marcasite. at first name marcasite is given by mineralogist to iron sulphide unstable form crystallizings at rhomibic system, but marcasite finds at decoration today crystallized at cubic system. this is especially follow fashion at victorian time. goldsmith usually describe marcasite as bronze colour, his design is usually resembles" art deco" period. you'll usually see brilliant marcasite decoration with wine harvest estate see.
marcasite physical characteristics:
yellow colour pink greenship sometimes. multi-colored stain may be present that is oxidation result. marcasite
metallic shine.
transparency: dark crystal.
crystal system orthorhombic; 2/m 2/m 2/m
crystal habit belongs to compiled to like list, or prism formed form. effect births twin produce spear formed crystal and repeated to birth twin produce" cock comb" group. also massive, botryoidal, stalactitic and bodular. sometimes as fossil replacement mineral and pseudomorph from pyrite.
poor cleavage at two directions.
broken odd bone.
violence 6 - 6.5
specific weight approximately 4.8+ average for (metallic mineral)
greenship line to brownish black.
characteristics other: sulphur smell sometimes detectable.
associate calcite mineral, dolomite, quartz, goethite, fluorite, pyrrhotite, bornite, chalcocite, sphalerite, pyrite, galena and sulfide other.
foremost insident widespread, but many foremost places belongs joplin, missouri; grant region, wisconsin and hardin region, illinio, united america; guanajuato, mexico; escale pa not calai, french; begara peruvian; china and russia.
crystal habit best arable land indicator, smell and pink greenship.
source [my information not accurate because the bad english and source, please check another]
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