Abelsonite

Infobox mineral
name = Abelsonite
category =
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formula = NiC₃₁H₃₂N₄
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color = Pink-purple, reddish-brown
habit = Aggregates - Made of numerous individual crystals or clusters. Platy - Sheet forms (e.g. micas)
system = Triclinic
twinning =
cleavage = [111] Good
fracture = Fragile - Crystals with a delicate and easily injured structure
mohs = 2-2.5 - Gypsum-Finger Nail
luster = Adamantine to Sub-Metallic
refractive =
opticalprop = Biaxial
birefringence =
pleochroism =
streak = pink
gravity = 1.33 - 1.48
density =
melt = yo
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solubility =
diaphaneity = Translucent
luminescence = Non-fluorescent
other =
references = [http://rruff.geo.arizona.edu/doclib/hom/abelsonite.pdf Mineral Handbook] [http://www.mindat.org/min-1.html Mindat] [http://www.webmineral.com/data/Abelsonite.shtml Webmineral]

Abelsonite, synonym Nickle Porphyrin, is a mineral of nickel, carbon, hydrogen, and nitrogen with formula: NiC₃₁H₃₂N₄. It forms purple to reddish brown triclinic crystals. The crystals are soft, with a Mohs scale rating is 2 to 3. It has a low specific gravity of 1.45.

It was first described in 1975 for specimens in oil shale from the Green River Formation, eastern Uintah County, Utah. It is named after Philip Hauge Abelson, an American physicist.

References