Abelsonite is semitransparent and pink-purple, dark greyish purple, pale purplish red, or reddish brown in color. The mineral occurs as thin laths or plates or small aggregates up to 1 cm. The mineral is soluble in benzene and acetone and is insoluble in water, dilute hydrochloric acid, and dilute nitric acid.
Associated authigenic Minerals include orthoclase, pyrite, quartz, dolomite, analcime, and a K--Fe micaceous mineral. Abelsonite occurs as aggregates of platy crystals, as much as 3 mm long, that range in color from pink-purple to dark reddish-brown. As of 1989, abelsonite was the only the known geoporphyrin to have a crystalline structure.
Associated authigenic #minerals include orthoclase, pyrite, quartz, dolomite, analcime, and a K--Fe micaceous mineral. As of 1989, #abelsonite was the only the known geoporphyrin to have a crystalline structure.https://t.co/q64nCc2WtT— Sattar Yekta (@anbar_asia) June 13, 2021
Most geoporphyrins occur as a series of homologues spanning a large range of carbon numbers. The porphyrin which comprises abelsonite is common, but it does not usually occur in isolation from other porphyrins. The mineral is a deoxophylloerythroetioporphyrin (DPEP), with nickel occupying the center of the porphyrin ring.
Most of the mineral consists of a C31 porphyrin with small quantities of a C30 norisomer. The mineral crystallizes in the triclinic crystal system.