Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Prehnite> ?p ?o }
- Prehnite abstract "Prehnite is an inosilicate of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2. Limited Fe3+ substitutes for aluminium in the structure. Prehnite crystallizes in the orthorhombic crystal system, and most oftens forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite. Very rarely will it form distinct, well individualized crystals showing a square-like cross-section, including those found at the Jeffrey Mine in Asbestos, Quebec, Canada. It is brittle with an uneven fracture and a vitreous to pearly lustre. Its hardness is 6-6.5, its specific gravity is 2.80-2.90 and its color varies from light green to yellow, but also colorless, blue, pink or white. In April 2000, a rare orange Prehnite was discovered at the famous Kalahari Manganese Fields in South Africa. It is mostly translucent, and rarely transparent.Though not a zeolite, it is found associated with minerals such as datolite, calcite, apophyllite, stilbite, laumontite, heulandite etc. in veins and cavities of basaltic rocks, sometimes in granites, syenites, or gneisses. It is an indicator mineral of the prehnite-pumpellyite metamorphic facies. It was first described in 1788 for an occurrence in the Karoo dolerites of Cradock, Eastern Cape Province, South Africa. It was named for Colonel Hendrik Von Prehn (1733–1785), commander of the military forces of the Dutch colony at the Cape of Good Hope from 1768 to 1780.Extensive deposits of gem quality prehnite occur in the basalt tableland surrounding Wave Hill Station in the central Northern Territory, of Australia.".
- Prehnite thumbnail Prehnite_Epidpte_edit.jpg?width=300.
- Prehnite wikiPageID "40343".
- Prehnite wikiPageLength "4495".
- Prehnite wikiPageOutDegree "40".
- Prehnite wikiPageRevisionID "694936082".
- Prehnite wikiPageWikiLink Aluminium.
- Prehnite wikiPageWikiLink Apophyllite.
- Prehnite wikiPageWikiLink Basalt.
- Prehnite wikiPageWikiLink Botryoidal.
- Prehnite wikiPageWikiLink Calcite.
- Prehnite wikiPageWikiLink Calcium.
- Prehnite wikiPageWikiLink Canada.
- Prehnite wikiPageWikiLink Cape_of_Good_Hope.
- Prehnite wikiPageWikiLink Category:Aluminium_minerals.
- Prehnite wikiPageWikiLink Category:Calcium_minerals.
- Prehnite wikiPageWikiLink Category:Inosilicates.
- Prehnite wikiPageWikiLink Category:Orthorhombic_minerals.
- Prehnite wikiPageWikiLink Cradock,_Eastern_Cape.
- Prehnite wikiPageWikiLink Crystal.
- Prehnite wikiPageWikiLink Datolite.
- Prehnite wikiPageWikiLink Eastern_Cape.
- Prehnite wikiPageWikiLink Gneiss.
- Prehnite wikiPageWikiLink Granite.
- Prehnite wikiPageWikiLink Hendrik_Von_Prehn.
- Prehnite wikiPageWikiLink Heulandite.
- Prehnite wikiPageWikiLink Jeffrey_Mine.
- Prehnite wikiPageWikiLink Karoo_Supergroup.
- Prehnite wikiPageWikiLink Laumontite.
- Prehnite wikiPageWikiLink List_of_minerals.
- Prehnite wikiPageWikiLink List_of_minerals_named_after_people.
- Prehnite wikiPageWikiLink Mohs_scale_of_mineral_hardness.
- Prehnite wikiPageWikiLink Netherlands.
- Prehnite wikiPageWikiLink Northern_Territory.
- Prehnite wikiPageWikiLink Orthorhombic_crystal_system.
- Prehnite wikiPageWikiLink Prehnite-pumpellyite_facies.
- Prehnite wikiPageWikiLink Silicate_minerals.
- Prehnite wikiPageWikiLink South_Africa.
- Prehnite wikiPageWikiLink Specific_gravity.
- Prehnite wikiPageWikiLink Stilbite.
- Prehnite wikiPageWikiLink Syenite.
- Prehnite wikiPageWikiLink Wave_Hill_Station.
- Prehnite wikiPageWikiLink Zeolite.
- Prehnite wikiPageWikiLinkText "Prehnite".
- Prehnite wikiPageWikiLinkText "prehnite".
- Prehnite birefringence "δ = 0.021 - 0.033".
- Prehnite caption "Prehnite with epidote".
- Prehnite category Silicate_minerals.
- Prehnite cleavage "Distinct on [001]".
- Prehnite color "Colorless to gray to yellow, yellow-green or white".
- Prehnite dana "72.1".
- Prehnite diaphaneity "Semi-transparent to translucent".
- Prehnite fluorescence "Fluorescent, Short UV=blue white mild peach, Long UV=yellow.".
- Prehnite formula "Ca2Al2".
- Prehnite gravity "2.8".
- Prehnite habit "Globular, reniform to stalactitic".
- Prehnite luster "Vitreous - pearly".
- Prehnite mohs "6".
- Prehnite name "Prehnite".
- Prehnite opticalprop "Biaxial".
- Prehnite refractive "nα = 1.611 - 1.632 nβ = 1.615 - 1.642 nγ = 1.632 - 1.665".
- Prehnite strunz "9".
- Prehnite system "Orthorhombic - Pyramidal".
- Prehnite tenacity "Brittle".
- Prehnite twinning "Fine lamellar".
- Prehnite wikiPageUsesTemplate Template:Cn.
- Prehnite wikiPageUsesTemplate Template:Commons_category.
- Prehnite wikiPageUsesTemplate Template:Infobox_mineral.
- Prehnite wikiPageUsesTemplate Template:Reflist.
- Prehnite subject Category:Aluminium_minerals.
- Prehnite subject Category:Calcium_minerals.
- Prehnite subject Category:Inosilicates.
- Prehnite subject Category:Orthorhombic_minerals.
- Prehnite hypernym Inosilicate.
- Prehnite type ChemicalSubstance.
- Prehnite type Mineral.
- Prehnite type Inosilicate.
- Prehnite type ChemicalObject.
- Prehnite type Thing.
- Prehnite type Q7946.
- Prehnite comment "Prehnite is an inosilicate of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2. Limited Fe3+ substitutes for aluminium in the structure. Prehnite crystallizes in the orthorhombic crystal system, and most oftens forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite.".
- Prehnite label "Prehnite".
- Prehnite sameAs Q422128.
- Prehnite sameAs Прэніт.
- Prehnite sameAs Prehnita.
- Prehnite sameAs Prehnit.
- Prehnite sameAs Prehnita.
- Prehnite sameAs پرهنیت.
- Prehnite sameAs Prehniitti.
- Prehnite sameAs Prehnite.
- Prehnite sameAs פרהניט.
- Prehnite sameAs Prehnit.
- Prehnite sameAs Prehnít.
- Prehnite sameAs Prehnite.
- Prehnite sameAs Пренит.
- Prehnite sameAs Prehniet.
- Prehnite sameAs Prehnitt.
- Prehnite sameAs Prehnit.
- Prehnite sameAs Prehnita.
- Prehnite sameAs m.0b1pm.