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Seifertite

Seifertite is a silicate mineral with the formula SiO2 and is one of the densest polymorphs of silica. It has only been found in Martian and lunar meteorites, where it is presumably formed from either tridymite or cristobalite – other polymorphs of quartz – as a result of heating during the atmospheric entry and impact to the Earth, at an estimated…

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Category
Tectosilicate minerals
Crystal class
Dipyramidal (mmm) H–M symbol: (2/m 2/m 2/m)
Crystal habit
Microscopic crystals
Crystal system
Orthorhombic (Pbcn)
Dana classification
75.01.06 (tectosilicates)
Formula
SiO2

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Seifertite

Nodes27
Edges26
Triples12
Avg. degree1.93
Density0.074074
Components1

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Seifertite

Top relations

Category · 1
Seifertite → Tectosilicate minerals
Crystal class · 1
Seifertite → Dipyramidal (mmm) H–M symbol: (2/m 2/m 2/m)
Crystal habit · 1
Seifertite → Microscopic crystals
Crystal system · 1
Seifertite → Orthorhombic (Pbcn)
Dana classification · 1
Seifertite → 75.01.06 (tectosilicates)
Formula · 1
Seifertite → SiO2
Formula mass · 1
Seifertite → 60.08 g/mol
Group · 1
Seifertite → Quartz group
IMA symbol · 1
Seifertite → Sft
Specific gravity · 1
Seifertite → 4.294

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Important terminology

sio2 gpa quartz mineral silica cristobalite lamellae orthorhombic polymorphs found pressures 40 forms seconds density cm3 also formula structure pbcn

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
SeifertiteCategoryTectosilicate minerals1.00infobox
SeifertiteCrystal classDipyramidal (mmm) H–M symbol: (2/m 2/m 2/m)1.00infobox
SeifertiteCrystal habitMicroscopic crystals1.00infobox
SeifertiteCrystal systemOrthorhombic (Pbcn)1.00infobox
SeifertiteDana classification75.01.06 (tectosilicates)1.00infobox
SeifertiteFormulaSiO21.00infobox
SeifertiteFormula mass60.08 g/mol1.00infobox
SeifertiteGroupQuartz group1.00infobox
SeifertiteIMA symbolSft1.00infobox
SeifertiteSpecific gravity4.2941.00infobox
SeifertiteStrunz classification4.DA.05 (oxides)1.00infobox
Seifertiteis asilicate mineral with the formula SiO2 and is one of the densest polymorphs of silica0.90text

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