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Pyroxferroite

Pyroxferroite (Fe2+,Ca)SiO3 is a single chain inosilicate. It is mostly composed of iron, silicon and oxygen, with smaller fractions of calcium and several other metals. Together with armalcolite and tranquillityite, it is one of the three minerals which were discovered on the Moon during the 1969 Apollo 11 mission. It was then found in Lunar and Martian…

Art, Occurrence & Synthesis

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2V angle
34–40°
Category
Inosilicate minerals (single chain)
Cleavage
Good on (010), poor on (001)
Color
Yellow
Crystal system
Triclinic
Formula
(Fe2+,Ca)SiO3

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Occurrence

Synthesis

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Pyroxferroite

Nodes44
Edges43
Triples68
Avg. degree1.95
Density0.045455
Components1

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Pyroxferroite

Top relations

related to Occurrence · 27
Pyroxferroite → Anderson County, Apollo, Earth, Earth's, Finland, In, Isanago, It, Iva, Japan, Kyoto Prefecture, Lapua, Later, Lunar, Mars, Martian, Moon, Oman, Sea, South Carolina
related to Properties · 12
Pyroxferroite → Al2O3, CaO, Chemical, FeO, MgO, MnO, SiO2, SiO4, The, These, TiO2, Whereas
related to Etymology · 5
Pyroxferroite → Greek, However, Latin, Pyroxenes, The
related to Synthesis · 5
Pyroxferroite → Ca0, However, It, Synthetic, The
2V angle · 1
Pyroxferroite → 34–40°
Category · 1
Pyroxferroite → Inosilicate minerals (single chain)
Cleavage · 1
Pyroxferroite → Good on (010), poor on (001)
Color · 1
Pyroxferroite → Yellow
Crystal system · 1
Pyroxferroite → Triclinic
Formula · 1
Pyroxferroite → (Fe2+,Ca)SiO3

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Important terminology

minerals lunar clinopyroxene pyroxene mineral pyroxmangite inosilicate moon found also produced temperatures metastable armalcolite tranquillityite apollo 11 fe2 ca sio3

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Pyroxferroite2V angle34–40°1.00infobox
PyroxferroiteCategoryInosilicate minerals (single chain)1.00infobox
PyroxferroiteCleavageGood on (010), poor on (001)1.00infobox
PyroxferroiteColorYellow1.00infobox
PyroxferroiteCrystal systemTriclinic1.00infobox
PyroxferroiteFormula(Fe2+,Ca)SiO31.00infobox
PyroxferroiteGroupPyroxene group1.00infobox
PyroxferroiteIMA symbolPxf1.00infobox
PyroxferroiteLusterVitreous1.00infobox
PyroxferroiteMohs scale hardness4.5–5.51.00infobox
PyroxferroiteOptical propertiesBiaxial (+)1.00infobox
PyroxferroitePleochroismFaint; pale yellow to yellow-orange1.00infobox
PyroxferroiteRefractive indexnα = 1.748–1.756 nβ = 1.750–1.758 nγ = 1.767–1.7681.00infobox
PyroxferroiteSeriesPyroxferroite-Pyroxmangite series1.00infobox
PyroxferroiteSpace groupP1 (no. 2)1.00infobox
PyroxferroiteSpecific gravity3.68–3.76 g/cm3 (measured)1.00infobox
PyroxferroiteStreakWhite1.00infobox
PyroxferroiteStrunz classification9.DO.051.00infobox
PyroxferroiteUnit cella = 6.6213 Å, b = 7.5506 Å, c = 17.3806 Å, α = 114.267°, β = 82.684°, γ = 94.756°, Z = 141.00infobox

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