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Cavansite

Cavansite, named for its chemical composition of calcium vanadium silicate, is a deep blue hydrous calcium vanadium phyllosilicate mineral, occurring as a secondary mineral in basaltic and andesitic rocks along with a variety of zeolite minerals. Its blue coloring comes from vanadium, a metal ion. Discovered in 1967 in Malheur County, Oregon, cavansite…

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Associated minerals

ApophylliteStilbiteBabingtoniteFeSi
10 related topics

Overview

CalciumVanadiumPhyllosilicateBasalticAndesitic
13 related topics

Key facts & relationships

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2V angle
Measured: 52°
Birefringence
δ = 0.009
Category
Phyllosilicate minerals
Cleavage
Good on {010}
Color
Brilliant sky-blue to greenish blue
Crystal class
Dipyramidal (mmm) H–M Symbol: (2/m 2/m 2/m)

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Overview

Associated minerals

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Map overview Semantic statistics

Cavansite

Nodes26
Edges25
Triples33
Avg. degree1.92
Density0.076923
Components1

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Cavansite

Top relations

related to Notes for identification · 5
Cavansite → Finally, It, Rarely, Sometimes, The
related to External links · 3
Cavansite → Media, Wikimedia Commons Cavansite, Wiktionary-logo-en-v2
is a · 2
Cavansite → relatively rare mineral, sought-after collector's mineral
related to Uses of cavansite · 2
Cavansite → Although, However
2V angle · 1
Cavansite → Measured: 52°
Birefringence · 1
Cavansite → δ = 0.009
Category · 1
Cavansite → Phyllosilicate minerals
Cleavage · 1
Cavansite → Good on {010}
Color · 1
Cavansite → Brilliant sky-blue to greenish blue
Crystal class · 1
Cavansite → Dipyramidal (mmm) H–M Symbol: (2/m 2/m 2/m)

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Important terminology

mineral blue minerals vanadium pentagonite color phyllosilicate zeolite crystals references ca h2o generally frequently found vo associated identification si4o10 crystal

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Cavansite2V angleMeasured: 52°1.00infobox
CavansiteBirefringenceδ = 0.0091.00infobox
CavansiteCategoryPhyllosilicate minerals1.00infobox
CavansiteCleavageGood on {010}1.00infobox
CavansiteColorBrilliant sky-blue to greenish blue1.00infobox
CavansiteCrystal classDipyramidal (mmm) H–M Symbol: (2/m 2/m 2/m)1.00infobox
CavansiteCrystal habitRadiating acicular prismatic crystals commonly as spherulitic rosettes1.00infobox
CavansiteCrystal systemOrthorhombic1.00infobox
CavansiteDiaphaneityTransparent1.00infobox
CavansiteFormulaCa(VO)Si4O10·4(H2O)1.00infobox
CavansiteIMA symbolCav1.00infobox
CavansiteLusterVitreous, pearly1.00infobox
CavansiteMohs scale hardness3 - 41.00infobox
CavansiteOptical propertiesBiaxial (+)1.00infobox
CavansitePleochroismVisible: X=Z= colorless Y= blue1.00infobox
CavansiteRefractive indexnα = 1.542(2) nβ = 1.544(2) nγ = 1.551(2)1.00infobox
CavansiteSpace groupPcmn1.00infobox
CavansiteSpecific gravity2.25 - 2.331.00infobox
CavansiteStreakBluish-white1.00infobox
CavansiteTenacityBrittle1.00infobox
CavansiteUnit cella = 9.792(2) Å, b = 13.644(3) Å, c = 9.629(2) Å; Z = 41.00infobox
Cavansiteis arelatively rare mineral0.90text
Cavansiteis asought-after collector's mineral0.90text

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    Min side: 3
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