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Matlockite

Matlockite is a rare lead halide mineral, named after the town of Matlock in Derbyshire, England, where it was first discovered in a nearby mine. Matlockite (chemical formula: PbFCl) gives its name to the matlockite group which consists of rare minerals of a similar structure.

Description, Matlockite group & Overview

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Category
Halide minerals
Cleavage
{001}, perfect
Colour
Colourless to yellow and greenish
Crystal class
Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit
Flattened, tabular crystals occurring as aggregates, rosettelike, radiating, hemispherical; also massive
Crystal system
Tetragonal

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Overview

Description

Matlockite group

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Map overview Semantic statistics

Matlockite

Nodes27
Edges26
Triples44
Avg. degree1.93
Density0.074074
Components1

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Matlockite

Top relations

related to Description · 17
Matlockite → Although, American Museum, Art Gallery, Bage Mine, Bolehill, Derby Museum, Derbyshire, Greg, In, It, John Mawe, Matlock, Mawe's Mineralogy, Mineralogy, Natural History, PbFCl, The
related to Matlockite group · 6
Matlockite → BiO, CaFCl, Cl, OH, PbCl, The
Category · 1
Matlockite → Halide minerals
Cleavage · 1
Matlockite → {001}, perfect
Colour · 1
Matlockite → Colourless to yellow and greenish
Crystal class · 1
Matlockite → Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Crystal habit · 1
Matlockite → Flattened, tabular crystals occurring as aggregates, rosettelike, radiating, hemispherical; also massive
Crystal system · 1
Matlockite → Tetragonal
Dana classification · 1
Matlockite → 9.2.11.1
Diaphaneity · 1
Matlockite → Transparent

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Important terminology

group mineral lead derbyshire pbfcl formula minerals mine rare phosgenite also halide matlock references found first discovered gives name consists

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
MatlockiteCategoryHalide minerals1.00infobox
MatlockiteCleavage{001}, perfect1.00infobox
MatlockiteColourColourless to yellow and greenish1.00infobox
MatlockiteCrystal classDitetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)1.00infobox
MatlockiteCrystal habitFlattened, tabular crystals occurring as aggregates, rosettelike, radiating, hemispherical; also massive1.00infobox
MatlockiteCrystal systemTetragonal1.00infobox
MatlockiteDana classification9.2.11.11.00infobox
MatlockiteDiaphaneityTransparent1.00infobox
MatlockiteFormulaPbFCl1.00infobox
MatlockiteFractureUneven to subconchoidal1.00infobox
MatlockiteIMA symbolMtl1.00infobox
MatlockiteLusterAdamantine, pearly on {001}1.00infobox
MatlockiteMohs scale hardness2.5 – 31.00infobox
MatlockiteOptical propertiesUniaxial (−)1.00infobox
MatlockiteRefractive indexnω = 2.150 nε = 2.0401.00infobox
MatlockiteSpace groupP4/nmm1.00infobox
MatlockiteSpecific gravity7.1 – 7.21.00infobox
MatlockiteStrunz classification3.DC.251.00infobox
MatlockiteTenacityBrittle1.00infobox
MatlockiteUnit cella = 4.11 Å, c = 7.23 Å; Z = 21.00infobox
Matlockiteis arare lead halide mineral0.90text

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