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- Euclase abstract "Euclase is a beryllium aluminium hydroxide silicate mineral (BeAlSiO4(OH)). It crystallizes in the monoclinic crystal system and is typically massive to fibrous as well as in slender prismatic crystals. It is related to beryl (Be3Al2Si6O18) and other beryllium minerals. It is a product of the decomposition of beryl in pegmatites.Euclase crystals are noted for their blue color, ranging from very pale to dark blue. The mineral may also be colorless, white, or light green. Cleavage is perfect, parallel to the clinopinacoid, and this suggested to René Just Haüy the name euclase, from the Greek εὖ, easily, and κλάσις, fracture. The ready cleavage renders the crystals fragile with a tendency to chip, and thus detracts from its use for personal ornament. When cut it resembles certain kinds of beryl and topaz, from which it may be distinguished by its specific gravity (3.1). Its hardness (7.5) is similar to beryl (7.5 - 8), and a bit less than that of topaz (8).It was first reported in 1792 from the Orenburg district in the southern Urals, Russia, where it is found with topaz and chrysoberyl in the gold-bearing gravels of the Sanarka (nowadays probably, Sakmara River, Mednogorsk district, Orenburgskaya Oblast'). Its type locality is Ouro Prêto, Minas Gerais, Southeast Region, Brazil, where it occurs with topaz. It is met with as a rarity in the mica-schist of the Rauris in the Austrian Alps.".
- Euclase thumbnail Euclase_(Brésil)_.jpg?width=300.
- Euclase wikiPageID "1089326".
- Euclase wikiPageRevisionID "589020348".
- Euclase 2v "50".
- Euclase birefringence "δ = 0.019".
- Euclase category Silicate_minerals.
- Euclase cleavage "Perfect, perfect on {010}, imperfect on {110} {001}".
- Euclase color "Colorless, white, pale green to deep yellowish green, greenish blue, pale blue to deep blue".
- Euclase diaphaneity "Transparent, translucent".
- Euclase dispersion "r > v".
- Euclase formula "BeAlSiO4".
- Euclase fracture "Conchoidal".
- Euclase gravity "2.99".
- Euclase habit "Prismatic crystals".
- Euclase hasPhotoCollection Euclase.
- Euclase luster "Vitreous".
- Euclase mohs "7.5".
- Euclase name "Euclase".
- Euclase opticalprop "Biaxial".
- Euclase pleochroism "May be marked in shades of deep blue".
- Euclase refractive "nα = 1.652 nβ = 1.655 nγ = 1.671".
- Euclase streak "White".
- Euclase strunz "9".
- Euclase symmetry Hermann%E2%80%93Mauguin_notation.
- Euclase symmetry "Monoclinic prismatic".
- Euclase symmetry "Space group: P 21/a".
- Euclase system Monoclinic_crystal_system.
- Euclase tenacity "Brittle".
- Euclase unitCell "a = 4.763 Å, b = 14.29 Å, c = 4.618 Å, β = 100.25°; Z=4".
- Euclase subject Category:Beryllium_minerals.
- Euclase subject Category:Monoclinic_minerals.
- Euclase subject Category:Nesosilicates.
- Euclase type Abstraction100002137.
- Euclase type BerylliumMinerals.
- Euclase type Material114580897.
- Euclase type Matter100020827.
- Euclase type Mineral114662574.
- Euclase type MonoclinicMinerals.
- Euclase type Part113809207.
- Euclase type PhysicalEntity100001930.
- Euclase type Relation100031921.
- Euclase type Substance100019613.
- Euclase type ChemicalSubstance.
- Euclase type Mineral.
- Euclase type ChemicalObject.
- Euclase type Thing.
- Euclase comment "Euclase is a beryllium aluminium hydroxide silicate mineral (BeAlSiO4(OH)). It crystallizes in the monoclinic crystal system and is typically massive to fibrous as well as in slender prismatic crystals. It is related to beryl (Be3Al2Si6O18) and other beryllium minerals. It is a product of the decomposition of beryl in pegmatites.Euclase crystals are noted for their blue color, ranging from very pale to dark blue. The mineral may also be colorless, white, or light green.".
- Euclase label "Euclase".
- Euclase label "Euclasio".
- Euclase label "Euklaas".
- Euclase label "Euklas".
- Euclase label "Эвклаз".
- Euclase sameAs Euklas.
- Euclase sameAs Euclasio.
- Euclase sameAs Euklaas.
- Euclase sameAs m.0450nc.
- Euclase sameAs Q424245.
- Euclase sameAs Q424245.
- Euclase sameAs Euclase.
- Euclase wasDerivedFrom Euclase?oldid=589020348.
- Euclase depiction Euclase_(Brésil)_.jpg.
- Euclase isPrimaryTopicOf Euclase.
- Euclase name "Euclase".