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Richterite

Richterite is a sodium calcium magnesium silicate mineral belonging to the amphibole group. If iron replaces the magnesium within the structure of the mineral, it is called ferrorichterite; if fluorine replaces the hydroxyl, it is called fluororichterite. Richterite crystals are long and prismatic, or prismatic to fibrous aggregate, or rock-bound…

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SodiumCalciumMagnesiumSilicateMineral
22 related topics

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2V angle
68° measured
Birefringence
δ = 0.021
Category
Inosilicates
Cleavage
Perfect
Color
Brown, yellow, red, or green
Crystal class
Prismatic (2/m) (same H-M symbol)

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Richterite

Nodes24
Edges23
Triples23
Avg. degree1.92
Density0.083333
Components1

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Richterite

Top relations

2V angle · 1
Richterite → 68° measured
Birefringence · 1
Richterite → δ = 0.021
Category · 1
Richterite → Inosilicates
Cleavage · 1
Richterite → Perfect
Color · 1
Richterite → Brown, yellow, red, or green
Crystal class · 1
Richterite → Prismatic (2/m) (same H-M symbol)
Crystal habit · 1
Richterite → Prismatic; acicular or asbestiform
Crystal system · 1
Richterite → Monoclinic
Diaphaneity · 1
Richterite → Transparent to translucent
Formula · 1
Richterite → Na(NaCa)Mg5Si8O22(OH)2#

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Important terminology

mineral magnesium iron occurs wilberforce group prismatic brown yellow pale green ontario canada references sodium calcium silicate amphibole fluorine hydroxyl

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Richterite2V angle68° measured1.00infobox
RichteriteBirefringenceδ = 0.0211.00infobox
RichteriteCategoryInosilicates1.00infobox
RichteriteCleavagePerfect1.00infobox
RichteriteColorBrown, yellow, red, or green1.00infobox
RichteriteCrystal classPrismatic (2/m) (same H-M symbol)1.00infobox
RichteriteCrystal habitPrismatic; acicular or asbestiform1.00infobox
RichteriteCrystal systemMonoclinic1.00infobox
RichteriteDiaphaneityTransparent to translucent1.00infobox
RichteriteFormulaNa(NaCa)Mg5Si8O22(OH)2#1.00infobox
RichteriteFractureUneven, brittle1.00infobox
RichteriteIMA symbolRct1.00infobox
RichteriteLusterVitreous1.00infobox
RichteriteMohs scale hardness5–61.00infobox
RichteriteOptical propertiesBiaxial (−)1.00infobox
RichteritePleochroismStrong: pale yellow, orange, and red1.00infobox
RichteriteRefractive indexnα = 1.615 nβ = 1.629 nγ = 1.6361.00infobox
RichteriteSpace groupC2/m1.00infobox
RichteriteSpecific gravity3.0–3.51.00infobox
RichteriteStreakPale yellow1.00infobox
RichteriteStrunz classification9.DE.201.00infobox
RichteriteTwinningSimple or multiple parallel to {100}1.00infobox
Richteriteis asodium calcium magnesium silicate mineral belonging to the amphibole group0.90text

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