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Putnisite

Putnisite is a mineral composed of strontium, calcium, chromium, sulfur, carbon, oxygen and hydrogen. It was discovered on the Polar Bear Peninsula in Shire of Dundas, Western Australia in 2007 during mining activity. Following identification and recognition by the IMA in 2012 the mineral was named after mineralogists Andrew and Christine Putnis. The…

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Overview

StrontiumCalciumChromiumSulfurCarbon
15 related topics

Key facts & relationships

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Category
Minerals
Cleavage
, and good
Color
Purple
Crystal class
Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Crystal habit
Pseudocubic crystals
Crystal system
Orthorhombic

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Overview

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Map overview Semantic statistics

Putnisite

Nodes17
Edges16
Triples20
Avg. degree1.88
Density0.117647
Components1

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Putnisite

Top relations

Category · 1
Putnisite → Minerals
Cleavage · 1
Putnisite → , and good
Color · 1
Putnisite → Purple
Crystal class · 1
Putnisite → Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
Crystal habit · 1
Putnisite → Pseudocubic crystals
Crystal system · 1
Putnisite → Orthorhombic
Diaphaneity · 1
Putnisite → Translucent
Formula · 1
Putnisite → SrCa4Cr83+(CO3)8(SO4)(OH)16·25 H2O
Fracture · 1
Putnisite → Brittle – uneven
IMA symbol · 1
Putnisite → Pni

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Important terminology

mineral crystals ima pleochroism minerals polar bear peninsula western australia properties translucent purple distinct pale bluish grey pink references strontium

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PutnisiteCategoryMinerals1.00infobox
PutnisiteCleavage, and good1.00infobox
PutnisiteColorPurple1.00infobox
PutnisiteCrystal classDipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)1.00infobox
PutnisiteCrystal habitPseudocubic crystals1.00infobox
PutnisiteCrystal systemOrthorhombic1.00infobox
PutnisiteDiaphaneityTranslucent1.00infobox
PutnisiteFormulaSrCa4Cr83+(CO3)8(SO4)(OH)16·25 H2O1.00infobox
PutnisiteFractureBrittle – uneven1.00infobox
PutnisiteIMA symbolPni1.00infobox
PutnisiteLusterVitreous1.00infobox
PutnisiteMohs scale hardness1.5–21.00infobox
PutnisiteOptical propertiesBiaxial (−)1.00infobox
PutnisitePleochroismDistinct: X pale bluish grey, Y pale purple, Z pale purple1.00infobox
PutnisiteRefractive indexnα = 1.552, nβ = 1.583 and nγ = 1.5991.00infobox
PutnisiteSpace groupPnma1.00infobox
PutnisiteSpecific gravity2.201.00infobox
PutnisiteStreakPink1.00infobox
PutnisiteUnit cella = 15.351 Å, b = 20.421 Å, c = 18.270 Å; Z = 41.00infobox
Putnisiteis amineral composed of strontium0.90text

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