Hedenbergite

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hedenbergite [′hed·ən‚bər‚gīt]

(mineralogy)

CaFeSi₂O₆A black mineral consisting of calcium-iron pyroxene and occurring at the contacts of limestone with granitic masses.

Hedenbergite

(named after the 19th-century Swedish mineralogist L. Hedenberg), a mineral of the pyroxene group, CaFe(Si₂O₆), hedenbergite often contains a mixture of Mg and Mn²⁺. It crystallizes in a monoclinic system, forming radially fibrous or large rodlike aggregates. Its color is dark green, its hardness is 5.5-6 on the mineralogical scale, and its density is 5,500-6,000 kg/m³. It is found mainly in contact deposits of magnetite and in various calcic skarns. When subjected to weathering it is transformed mainly into siliceous iron ochres.

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No references found			The veins are surrounded by a 5- to 10-cm-wide alteration zone that consists of calcite, dolomite, diopside, hedenbergite, vesuvianite, and base-metal sulfides. Emerald and aquamarine mineralization in Canada by Neufeld, Heather L.D. / Geoscience Canada Hedenbergite and ilvaite skarn mineralization is common within the massive sulfide zone. Thunder Mountain Gold Announces Assay Results on Sulfide Intercept at ... by Business Wire			Heckscher, August Heckscher, Eli Filip Hectare hectastyle hectic hecto- hectocotylus hectogram Hectograph hectoliter hectometer hectometric wave Hector Hector Agosti Hector Louis Berlioz Hector Malot hectorite Hecuba Heda, Willem Claasz Heda, Willem Claesz Hedayat, Reza Qoli Khan Hedayat, Sadeq Hedberg, Hollis Dow heddle Hedeby Hedenbergite hedeoma oil Heder Hedera hedge hedge fund Hedge Hyssop hedge sparrow Hedge, Frederic Henry hedgehog hedgehog round Hedgehogs Hedgerow Hedging Hedin, Sven Anders HEDIS Hedjaz hedleyite Hedmark hedonic gland Hedonism hedonophobia hedreocraton Hedvall effect I Hedvall effect II Hedwig, Johann			HEDAP HEDAR hedarim hedarim Hedayat, Reza Qoli Khan Hedayat, Sadeq HEDB Hedberg, Hollis Dow HEDC HEDCMS HEDCO HEDD heddle heddle Heddle Loom Heddle Loom Heddle-eye heddles heddles Heddling Heddling HEDDS Hedeby Hedemark Hedenbergite Hedensted Idraetsforening Hedeoma hedeoma oil hedeoma oil Hedeoma pulegioides Hedeoma pulegioides Heder Heder Hedera Hedera Hedera Hedera helix Hedera helix Hedera senticosa Hederaceous Hederal Hederic Hederiferous Hederose heders heders Hedex Ibuprofen Hedex Ibuprofen Hedex Ibuprofen HEDF HEDFC HEDG hedge hedge hedge

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