Abelsonite

Abelsonite
Abelsonite
General
Category	Organic compounds
Chemical formula	NiC31H32N4
Strunz classification	10.CA.20
Identification
Color	Pink-purple, reddish-brown
Crystal habit	Aggregates - Made of numerous individual crystals or clusters. Platy - Sheet forms (e.g. micas)
Crystal system	Triclinic
Cleavage	[111] Good
Fracture	Fragile - Crystals with a delicate and easily injured structure
Mohs scale hardness	2-2.5 - Gypsum-Finger Nail
Luster	Adamantine to Sub-Metallic
Streak	pink
Diaphaneity	Translucent
Specific gravity	1.33 - 1.48
Density	1.45
Optical properties	Biaxial
References	[1][2][3]

Abelsonite (synonymous with nickel porphyrin), is an organic porphyrin mineral ^[1] first described in 1975 for specimens in oil shale from the Green River Formation in eastern Uintah County, Utah. It is named after Philip Hauge Abelson, an American physicist.

References

1. ^ ^{a b} http://rruff.geo.arizona.edu/doclib/hom/abelsonite.pdf Mineral Handbook
2. ^ http://www.mindat.org/min-1.html Mindat
3. ^ http://www.webmineral.com/data/Abelsonite.shtml Webmineral

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