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- Pezzottaite abstract "Pezzottaite, marketed under the name raspberyl or raspberry beryl, is a newly identified mineral species, first recognized by the International Mineralogical Association in September 2003. Pezzottaite is a caesium analogue of beryl, a silicate of caesium, beryllium, lithium and aluminium, with the chemical formula Cs(Be2Li)Al2Si6O18. Named after Italian geologist and mineralogist Federico Pezzotta, pezzottaite was first thought to be either red beryl or a new variety of beryl ("caesium beryl"); unlike actual beryl, however, pezzottaite contains lithium and crystallizes in the trigonal crystal system rather than the hexagonal system.Colours include shades of raspberry red to orange-red and pink. Recovered from miarolitic cavities in the granitic pegmatite fields of Fianarantsoa province, southern Madagascar, the pezzottaite crystals were small—no more than about 7 cm in their widest dimension—and tabular or equant in habit, and few in number, most being heavily included with growth tubes and liquid feathers. Approximately 10 per cent of the rough material would also exhibit chatoyancy when polished. Most cut pezzottaite gems are under one carat (200 mg) in weight and rarely exceed two carats (400 mg).With the exception of hardness (8 on Mohs scale), the physical and optical properties of pezzottaite—i.e., specific gravity 3.10 (average), refractive index 1.601 to 1.620, birefringence 0.008 to 0.011 (uniaxial negative)—are all higher than typical beryl. Pezzottiate is brittle with a conchoidal to irregular fracture, and streaks white. Like beryl, it has an imperfect to fair basal cleavage. Pleochroism is moderate, from pink-orange or purplish pink to pinkish purple. Pezzottaite's absorption spectrum, as seen by a hand-held (direct vision) spectroscope, features a band at 485–500 nm with some specimens showing additional weak lines at 465 and 477 nm and a weak band at 550 to 580 nm.Most (if not all) of the Madagascan deposits have since been exhausted. Pezzottaite has been found in at least one other locality, Afghanistan: this material was first thought to be caesium-rich morganite (pink beryl). Like morganite and bixbite, pezzottaite is believed to owe its color to radiation-induced color centres involving trivalent manganese. Pezzottaite will lose its color if heated to 450 °C for two hours, but the colour can be restored with gamma irradiation.".
- Pezzottaite colour Pink.
- Pezzottaite colour Raspberry_(color).
- Pezzottaite colour Vermilion.
- Pezzottaite thumbnail Pezzottaite-256889.jpg?width=300.
- Pezzottaite wikiPageID "1212792".
- Pezzottaite wikiPageRevisionID "579612075".
- Pezzottaite birefringence "-0.008".
- Pezzottaite cleavage "Imperfect; basal".
- Pezzottaite color "Raspberry red, orange-red, pink".
- Pezzottaite formula "CsAl2Si6O18".
- Pezzottaite fracture "Conchoidal to uneven".
- Pezzottaite gravity "3.1".
- Pezzottaite habit "flattened, tabular, equant, aggregate".
- Pezzottaite hasPhotoCollection Pezzottaite.
- Pezzottaite luster "Vitreous".
- Pezzottaite mohs "8".
- Pezzottaite name "Pezzottaite".
- Pezzottaite pleochroism "Moderate dichroic".
- Pezzottaite refractive "1.601".
- Pezzottaite streak "White".
- Pezzottaite system Trigonal_crystal_system.
- Pezzottaite wordnet_type synset-mineral-noun-1.
- Pezzottaite subject Category:Beryllium_minerals.
- Pezzottaite subject Category:Cyclosilicates.
- Pezzottaite subject Category:Gemstones.
- Pezzottaite subject Category:Lithium_minerals.
- Pezzottaite subject Category:Trigonal_minerals.
- Pezzottaite type Abstraction100002137.
- Pezzottaite type BerylliumMinerals.
- Pezzottaite type LithiumMinerals.
- Pezzottaite type Material114580897.
- Pezzottaite type Matter100020827.
- Pezzottaite type Mineral114662574.
- Pezzottaite type Part113809207.
- Pezzottaite type PhysicalEntity100001930.
- Pezzottaite type Relation100031921.
- Pezzottaite type Substance100019613.
- Pezzottaite type ChemicalSubstance.
- Pezzottaite type Mineral.
- Pezzottaite type ChemicalObject.
- Pezzottaite type Thing.
- Pezzottaite comment "Pezzottaite, marketed under the name raspberyl or raspberry beryl, is a newly identified mineral species, first recognized by the International Mineralogical Association in September 2003. Pezzottaite is a caesium analogue of beryl, a silicate of caesium, beryllium, lithium and aluminium, with the chemical formula Cs(Be2Li)Al2Si6O18.".
- Pezzottaite label "Pezzotaiet".
- Pezzottaite label "Pezzottaite".
- Pezzottaite label "Pezzottaite".
- Pezzottaite label "Pezzottaíta".
- Pezzottaite label "ペツォッタイト".
- Pezzottaite sameAs Pezzottaíta.
- Pezzottaite sameAs Pezzottaite.
- Pezzottaite sameAs ペツォッタイト.
- Pezzottaite sameAs Pezzotaiet.
- Pezzottaite sameAs m.04hsc9.
- Pezzottaite sameAs Q2252676.
- Pezzottaite sameAs Q2252676.
- Pezzottaite sameAs Pezzottaite.
- Pezzottaite wasDerivedFrom Pezzottaite?oldid=579612075.
- Pezzottaite depiction Pezzottaite-256889.jpg.
- Pezzottaite isPrimaryTopicOf Pezzottaite.
- Pezzottaite name "Pezzottaite".