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- Boracite abstract "Boracite is a magnesium borate mineral with formula: Mg3B7O13Cl. It occurs as blue green, colorless, gray, yellow to white crystals in the orthorhombic - pyramidal crystal system. Boracite also shows pseudo-isometric cubical and octahedral forms. These are thought to be the result of transition from an unstable high temperature isometric form on cooling. Penetration twins are not unusual. It occurs as well formed crystals and dispersed grains often embedded within gypsum and anhydrite crystals. It has a Mohs hardness of 7 to 7.5 and a specific gravity of 2.9. Refractive index values are nα = 1.658 - 1.662, nβ = 1.662 - 1.667 and nγ = 1.668 - 1.673. It has a conchoidal fracture and does not show cleavage. It is soluble in water.Boracite is typically found in evaporite sequences associated with gypsum, anhydrite, halite, sylvite, carnallite, kainite and hilgardite. It was first described in 1789 for specimens from its type locality of Kalkberg hill, Lüneburg, Lower Saxony, Germany. The name is obviously derived from its boron content (19 to 20% boron by mass).".
- Boracite thumbnail Boracit_mineralogisches_museum_bonn.jpg?width=300.
- Boracite wikiPageID "1179801".
- Boracite wikiPageLength "4083".
- Boracite wikiPageOutDegree "41".
- Boracite wikiPageRevisionID "708421110".
- Boracite wikiPageWikiLink Anhydrite.
- Boracite wikiPageWikiLink Borate_minerals.
- Boracite wikiPageWikiLink Boron.
- Boracite wikiPageWikiLink Brittleness.
- Boracite wikiPageWikiLink Carnallite.
- Boracite wikiPageWikiLink Category:Magnesium_minerals.
- Boracite wikiPageWikiLink Category:Orthorhombic_minerals.
- Boracite wikiPageWikiLink Category:Tektoborates.
- Boracite wikiPageWikiLink Chlorine.
- Boracite wikiPageWikiLink Classification_of_non-silicate_minerals.
- Boracite wikiPageWikiLink Cleavage_(crystal).
- Boracite wikiPageWikiLink Conchoidal_fracture.
- Boracite wikiPageWikiLink Crystal_system.
- Boracite wikiPageWikiLink Crystal_twinning.
- Boracite wikiPageWikiLink Crystallinity.
- Boracite wikiPageWikiLink Cubic_crystal_system.
- Boracite wikiPageWikiLink Evaporite.
- Boracite wikiPageWikiLink Gypsum.
- Boracite wikiPageWikiLink Halite.
- Boracite wikiPageWikiLink Hilgardite.
- Boracite wikiPageWikiLink Kainite.
- Boracite wikiPageWikiLink List_of_minerals.
- Boracite wikiPageWikiLink Lustre_(mineralogy).
- Boracite wikiPageWikiLink Lüneburg_Kalkberg.
- Boracite wikiPageWikiLink Magnesium.
- Boracite wikiPageWikiLink Mohs_scale_of_mineral_hardness.
- Boracite wikiPageWikiLink Octahedron.
- Boracite wikiPageWikiLink Orthorhombic_crystal_system.
- Boracite wikiPageWikiLink Oxygen.
- Boracite wikiPageWikiLink Refractive_index.
- Boracite wikiPageWikiLink Specific_gravity.
- Boracite wikiPageWikiLink Sylvite.
- Boracite wikiPageWikiLink Type_locality_(geology).
- Boracite wikiPageWikiLinkText "Boracite".
- Boracite wikiPageWikiLinkText "boracite".
- Boracite 2v "82".
- Boracite birefringence "δ = 0.010–0.011".
- Boracite caption "Boracite, Mineralogisches Museum Bonn".
- Boracite category Borate_minerals.
- Boracite cleavage "None".
- Boracite color "Colorless, white, gray, brown, orange, yellow, pale green, dark green, blue-green, or blue; colorless in transmitted light".
- Boracite dana "25.06".
- Boracite density "2.91".
- Boracite diaphaneity "Subtransparent to translucent".
- Boracite dispersion "0.024".
- Boracite fluorescence "None".
- Boracite formula "Mg3B7O13Cl".
- Boracite fracture "Irregular/uneven, conchoidal".
- Boracite gravity "2.95".
- Boracite habit "Crystalline, disseminated".
- Boracite luster Lustre_(mineralogy).
- Boracite mohs "7".
- Boracite molweight "392.03".
- Boracite name "Boracite".
- Boracite opticalprop "Biaxial".
- Boracite pleochroism "None".
- Boracite refractive "nα=1.658 - 1.662,".
- Boracite refractive "nβ=1.662 - 1.667,".
- Boracite refractive "nγ=1.668 - 1.673".
- Boracite solubility "Very slowly soluble in H2O; Slowly but completely soluble in HCl".
- Boracite streak "White".
- Boracite strunz "6".
- Boracite system "Orthorhombic - pyramidal".
- Boracite tenacity Brittleness.
- Boracite twinning "Rarely as penetration twins".
- Boracite unitCell "a = 8.577 Å, b = 8.553 Å, c = 12.09 Å; Z = 4".
- Boracite wikiPageUsesTemplate Template:Commons_category.
- Boracite wikiPageUsesTemplate Template:Infobox_mineral.
- Boracite wikiPageUsesTemplate Template:Mineral-stub.
- Boracite wikiPageUsesTemplate Template:Portal.
- Boracite wikiPageUsesTemplate Template:Reflist.
- Boracite subject Category:Magnesium_minerals.
- Boracite subject Category:Orthorhombic_minerals.
- Boracite subject Category:Tektoborates.
- Boracite hypernym Mineral.
- Boracite type ChemicalSubstance.
- Boracite type Mineral.
- Boracite type ChemicalObject.
- Boracite type Thing.
- Boracite type Q7946.
- Boracite comment "Boracite is a magnesium borate mineral with formula: Mg3B7O13Cl. It occurs as blue green, colorless, gray, yellow to white crystals in the orthorhombic - pyramidal crystal system. Boracite also shows pseudo-isometric cubical and octahedral forms. These are thought to be the result of transition from an unstable high temperature isometric form on cooling. Penetration twins are not unusual. It occurs as well formed crystals and dispersed grains often embedded within gypsum and anhydrite crystals.".
- Boracite label "Boracite".
- Boracite sameAs Q420204.
- Boracite sameAs بوراسيت.
- Boracite sameAs Boracit.
- Boracite sameAs Boracita.
- Boracite sameAs Boratsiit.
- Boracite sameAs براسیت.
- Boracite sameAs Boracite.
- Boracite sameAs Borasit.
- Boracite sameAs Boracite.
- Boracite sameAs Борацит.
- Boracite sameAs Boraciet.
- Boracite sameAs Boracitt.