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Polished Free Forms

Mineral Reference Lookup for o

This reference page contains mineralogic data for o and folklore and metaphysical beliefs. If the mineral is an alternate naming of a more common name, the more common mineral's data is displayed below the list of synonyms.

Minerals matching o in the database: a-Corundum Aastrophyllit Aastrophyllita Aastrophyllite Abakusz-ko Abelsonit Abelsonita Abelsonite Acadiolit Acadiolita Acadiolite Acadiolithe Acanthicone Acanthikon Acanticone Acanticonit Acanticonita Acanticonite Acantikonit Acantoide Achates unguium colore oculus mundi Achates vix pellucidanebulosacolore griseo mixto Achrochordit Achrochordita Achrochordite Achroit Achroita Achroite Achromait Achromaita Achromaite Acicular arseniate of copper Acicular boulangerite Acicular stone Acicular-ore Acid plagioclase Acide arsenioso Acide boracique Acide borique Acide molybdique Acido asenioso Acido borico Acido vitriolo saturata Acidum boracisvulgo sal sedativum Acier volcanique Acimite-diopside Açorit Açorita Açorite Acrochordit

Mineralogical Reference

o

Mineral	a-Corundum
Synonym	Corundum

Corundum (synonym)

Mineral	Corundum
Chemistry	Al 2 O 3
Color	Colourlessblue red pink Yellow grey
Luster	Vitreous
CrystalSystem	Trigonal
Cleavage	None Observed
Hardness	9
SpecificGravity	4.01 g/ccm
Streak	White
Occurences	Silica-poor rockssuch as Nephelene-Syenitesalkali igneous undersaturated rockscontact aureoles in altered aluminous shalesaluminous xenoliths in high temperature plutonic and hypabyssal rocksmetamorphosed bauxite depositsand as a detrital material in sediments.
IMAStatus	Approved
CellParameters	a = 4.751c = 12.97
Ratio	a:c = 1 : 2.73
OpticalType	Uniaxial (-)
RI	n ω =1.768 - 1.772 n ε =1.760 - 1.76
Birefringence	δ=0.008 - 0.009
SurfaceRelief	High
Synonyms	Alumina Corundum Adamas siderites Ajatit Alumina Ayatit Ayatita Ayatite Corindon Corindone Corinendum Corinindum Corivendum Corivindum Corrindon Corundit Corundita Corundite Corundum; Corundum-alpha Corundumit Corundumita Co
Strunz	4/C.04-10 4 : Oxides & Hydroxides C : Oxides with metal : oxygen = 2:3 (M2O3 and related compounds) 04 : Hematite group

LDBD_159

OCOGEO_896

FLPND_029

QZSMPLPT_045

AGBTBD_054

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