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Berlinite

Berlinite (aluminium phosphate, chemical formula AlPO4 or Al(PO4)) is a rare high-temperature hydrothermal or metasomatic phosphate mineral. It has the same crystal structure as quartz with a low temperature polytype isostructural with α–quartz and a high temperature polytype isostructural with β–quartz. Berlinite can vary from colorless to greyish or…

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Birefringence
δ = 0.008
Category
Phosphate mineral
Color
Colorless, pale gray, may be pale rose
Crystal class
Trapezohedral (32) H-M symbol: (32)
Crystal habit
Typically granular to massive
Crystal system
Trigonal

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Berlinite

Nodes45
Edges44
Triples28
Avg. degree1.96
Density0.044444
Components1

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Berlinite

Top relations

related to Further reading · 9
Berlinite → AlPO4, Bibcode, Chemistry, Kihara, Minerals, Muraoka, Physics, S2CID, The
Birefringence · 1
Berlinite → δ = 0.008
Category · 1
Berlinite → Phosphate mineral
Color · 1
Berlinite → Colorless, pale gray, may be pale rose
Crystal class · 1
Berlinite → Trapezohedral (32) H-M symbol: (32)
Crystal habit · 1
Berlinite → Typically granular to massive
Crystal system · 1
Berlinite → Trigonal
Diaphaneity · 1
Berlinite → Transparent to translucent
Formula · 1
Berlinite → AlPO4
Fracture · 1
Berlinite → Conchoidal

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Important terminology

mineral hydrothermal metasomatic quartz alpo4 crystal rare high-temperature mine occurs phosphate formula colorless pale translucent references structure temperature minerals 10

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
BerliniteBirefringenceδ = 0.0081.00infobox
BerliniteCategoryPhosphate mineral1.00infobox
BerliniteColorColorless, pale gray, may be pale rose1.00infobox
BerliniteCrystal classTrapezohedral (32) H-M symbol: (32)1.00infobox
BerliniteCrystal habitTypically granular to massive1.00infobox
BerliniteCrystal systemTrigonal1.00infobox
BerliniteDiaphaneityTransparent to translucent1.00infobox
BerliniteFormulaAlPO41.00infobox
BerliniteFractureConchoidal1.00infobox
BerliniteIMA symbolBer1.00infobox
BerliniteLusterVitreous1.00infobox
BerliniteMohs scale hardness6.51.00infobox
BerliniteOptical propertiesUniaxial (+)1.00infobox
BerliniteRefractive indexnω = 1.524 nε = 1.5321.00infobox
BerliniteSpace groupP3121, P32211.00infobox
BerliniteSpecific gravity2.64–2.661.00infobox
BerliniteStrunz classification8.AA.051.00infobox
BerliniteTwinningSubparallel lamellae1.00infobox
BerliniteUnit cella = 4.941 Å, c = 10.94 Å; Z = 31.00infobox

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