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Abelsonite is a nickel porphyrin mineral with chemical formula  C31H32N4Ni. It was discovered in 1969 in the U.S. State of Utah and described in 1975. The mineral is named after geochemist Philip H. Abelson. It is the only known crystalline geoporphyrin.

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Mineralogy Database Dictionary

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General Information:
 Chemical Formula:
(Molecular Weight = 519.31 gm)
Nickel 11.30 % Ni
Hydrogen 6.21 % 
Carbon 71.70 % 
Nitrogen 10.79 % 
 Empirical Formula:
Fractures in lacusterine, kerogen-rich shales.
 IMA Status:
Approved IMA 1975
TL: Green River formation, eastern Uintah Co., Utah, USA.
 Name Origin:
Named after Philip H. Abelson, president, the Carnegie Institution, Washington, DC, a pioneer in organic geochemistry.
Physical Properties:
[111] Good
pinkish red, purple, or reddish brown.
Platy - Sheet forms (e.g. micas)., Aggregates - Made of numerous individual crystals or clusters.,
2-2.5 - Gypsum-Finger Nail
Sub Metallic
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