Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Omphacite> ?p ?o }
- Omphacite abstract "Omphacite is a member of the pyroxene group of silicate minerals with formula: (Ca, Na)(Mg, Fe2+, Al)Si2O6. It is a variably deep to pale green or nearly colorless variety of pyroxene. Omphacite compositions are intermediate between calcium-rich augite and sodium-rich jadeite. It crystallizes in the monoclinic system with prismatic, typically twinned forms, though usually anhedral. Its space group (P2/n) is distinct from that of augite and jadeite (C2/c). It exhibits the typical near 90° pyroxene cleavage. It is brittle with specific gravity of 3.29 to 3.39 and a Mohs hardness of 5 to 6.It is a major mineral component of eclogite along with pyrope garnet and also occurs in blueschist facies and UHP (ultrahigh-pressure) metamorphic rocks. It also occurs in eclogite xenoliths from kimberlite as well as in crustal rocks metamorphosed at high pressures. Associated minerals in eclogites include garnet, quartz or coesite, rutile, kyanite, phengite, and lawsonite. Minerals such as glaucophane, lawsonite, titanite, and epidote occur with omphacite in blueschist facies metamorphic rocks. The name \"jade,\" usually referring to rocks made of jadeite, is sometimes also applied to rocks consisting entirely of omphacite. The name \"omphacite\" has been applied to compositions that contain between 20% and 80% jadeite. The stability of intermediate compositions between augite and jadeite is not well-understood, but miscibility gaps appear to be present at temperatures below 300 °C to 400 °C, and perhaps at higher temperatures. Pairs of pyroxenes -- both augite plus omphacite and omphacite plus jadeite -- appear to have existed in equilibrium at low temperatures.It was first described in 1815 in the Münchberg Metamorphic complex, Franconia, Bavaria, Germany. The name omphacite derives from the Greek omphax or unripe grape for the typical green color.".
- Omphacite wikiPageID "3280954".
- Omphacite wikiPageLength "4646".
- Omphacite wikiPageOutDegree "51".
- Omphacite wikiPageRevisionID "649674431".
- Omphacite wikiPageWikiLink Aluminium.
- Omphacite wikiPageWikiLink Augite.
- Omphacite wikiPageWikiLink Bavaria.
- Omphacite wikiPageWikiLink Blueschist.
- Omphacite wikiPageWikiLink Calcium.
- Omphacite wikiPageWikiLink Category:Aluminium_minerals.
- Omphacite wikiPageWikiLink Category:Calcium_minerals.
- Omphacite wikiPageWikiLink Category:Inosilicates.
- Omphacite wikiPageWikiLink Category:Iron_minerals.
- Omphacite wikiPageWikiLink Category:Magnesium_minerals.
- Omphacite wikiPageWikiLink Category:Sodium_minerals.
- Omphacite wikiPageWikiLink Coesite.
- Omphacite wikiPageWikiLink Crystal_system.
- Omphacite wikiPageWikiLink Crystal_twinning.
- Omphacite wikiPageWikiLink Eclogite.
- Omphacite wikiPageWikiLink Epidote.
- Omphacite wikiPageWikiLink Garnet.
- Omphacite wikiPageWikiLink Germany.
- Omphacite wikiPageWikiLink Glaucophane.
- Omphacite wikiPageWikiLink Greek_language.
- Omphacite wikiPageWikiLink Iron.
- Omphacite wikiPageWikiLink Jadeite.
- Omphacite wikiPageWikiLink Kimberlite.
- Omphacite wikiPageWikiLink Kyanite.
- Omphacite wikiPageWikiLink Lawsonite.
- Omphacite wikiPageWikiLink Magnesium.
- Omphacite wikiPageWikiLink Metamorphic_rock.
- Omphacite wikiPageWikiLink Miscibility_gap.
- Omphacite wikiPageWikiLink Mohs_scale_of_mineral_hardness.
- Omphacite wikiPageWikiLink Monoclinic_crystal_system.
- Omphacite wikiPageWikiLink Oxygen.
- Omphacite wikiPageWikiLink Phengite.
- Omphacite wikiPageWikiLink Pyrope.
- Omphacite wikiPageWikiLink Pyroxene.
- Omphacite wikiPageWikiLink Quartz.
- Omphacite wikiPageWikiLink Rutile.
- Omphacite wikiPageWikiLink Silicate_minerals.
- Omphacite wikiPageWikiLink Silicon.
- Omphacite wikiPageWikiLink Sodium.
- Omphacite wikiPageWikiLink Space_group.
- Omphacite wikiPageWikiLink Specific_gravity.
- Omphacite wikiPageWikiLink Titanite.
- Omphacite wikiPageWikiLinkText "Omphacite".
- Omphacite wikiPageWikiLinkText "omphacite".
- Omphacite 2v "Measured: 58° to 83°, Calculated: 74° to 88°".
- Omphacite birefringence "δ = 0.023".
- Omphacite category Pyroxene.
- Omphacite cleavage "Good on {110}, {110} ^ {10} ≈87°; parting on {100}".
- Omphacite color "Green to dark green; colorless to pale green in thin section".
- Omphacite dana "65.01".
- Omphacite diaphaneity "Translucent".
- Omphacite formula "Si2O6".
- Omphacite fracture "Uneven to conchoidal".
- Omphacite gravity "3.16".
- Omphacite habit "Rarely in rough crystals; anhedral, granular to massive".
- Omphacite luster "Vitreous to silky".
- Omphacite mohs "5".
- Omphacite name "Omphacite".
- Omphacite opticalprop "Biaxial".
- Omphacite pleochroism "Weak; X = colorless; Y = very pale green; Z = very pale green, blue-green".
- Omphacite refractive "nα = 1.662 - 1.701 nβ = 1.670 - 1.712 nγ = 1.685 - 1.723".
- Omphacite streak "Greenish white".
- Omphacite strunz "9".
- Omphacite symmetry "Monoclinic 2/m".
- Omphacite system "Monoclinic - Prismatic".
- Omphacite tenacity "Brittle".
- Omphacite twinning "Single and polysynthetic twinning common on {100}".
- Omphacite unitCell "a = 9.66 Å, b = 8.81 Å, c = 5.22 Å; β = 106.56°; Z = 4".
- Omphacite wikiPageUsesTemplate Template:Infobox_mineral.
- Omphacite wikiPageUsesTemplate Template:Overline.
- Omphacite wikiPageUsesTemplate Template:Reflist.
- Omphacite subject Category:Aluminium_minerals.
- Omphacite subject Category:Calcium_minerals.
- Omphacite subject Category:Inosilicates.
- Omphacite subject Category:Iron_minerals.
- Omphacite subject Category:Magnesium_minerals.
- Omphacite subject Category:Sodium_minerals.
- Omphacite hypernym Member.
- Omphacite type ChemicalSubstance.
- Omphacite type Mineral.
- Omphacite type Person.
- Omphacite type Inosilicate.
- Omphacite type ChemicalObject.
- Omphacite type Thing.
- Omphacite type Q7946.
- Omphacite comment "Omphacite is a member of the pyroxene group of silicate minerals with formula: (Ca, Na)(Mg, Fe2+, Al)Si2O6. It is a variably deep to pale green or nearly colorless variety of pyroxene. Omphacite compositions are intermediate between calcium-rich augite and sodium-rich jadeite. It crystallizes in the monoclinic system with prismatic, typically twinned forms, though usually anhedral. Its space group (P2/n) is distinct from that of augite and jadeite (C2/c).".
- Omphacite label "Omphacite".
- Omphacite sameAs Q745864.
- Omphacite sameAs Omfacita.
- Omphacite sameAs Omphacit.
- Omphacite sameAs Onfacita.
- Omphacite sameAs Omphacite.
- Omphacite sameAs אומפקיט.
- Omphacite sameAs Omfacite.
- Omphacite sameAs オンファス輝石.