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Titanite information


Titanite (Sphene)
Titanite crystals on amphibole (image width 2 mm)
General
CategoryNesosilicate
Formula
(repeating unit)
CaTiSiO5
IMA symbolTtn[1]
Strunz classification9.AG.15
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H–M symbol)
Space groupP21/a
Unit cella = 7.057 Å, b = 8.707 Å
c = 6.555 Å; β = 113.81°; Z = 4
Identification
ColourReddish brown, brown, gray, black, yellow, green, or red, colourless
Crystal habitFlattened wedge-shaped crystals, also massive
TwinningContact and penetration on {100}, lamellar on {221}
CleavageDistinct on [110], parting on {221}
FractureSub-conchoidal
Mohs scale hardness5–5.5
LusterSub-adamantine tending to slightly resinous
StreakReddish white
DiaphaneityTranslucent to transparent
Specific gravity3.48–3.60
Optical propertiesBiaxial (+); very high relief
Refractive indexnα = 1.843–1.950
nβ = 1.870–2.034
nγ = 1.943–2.110
Birefringenceδ = 0.100–0.160
PleochroismStrong: X = nearly colorless; Y = yellow to green; Z = red to yellow-orange
2V angle17–40° (measured)
Dispersionr > v strong
Other characteristics Radioactive – may be metamict
References[2][3][4][5]
Titanite crystal model

Titanite, or sphene (from Ancient Greek σφηνώ (sphēnṓ) 'wedge'),[5] is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium.[6]

  1. ^ Warr, L. N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ "Titanite". Handbook of Mineralogy (PDF).
  3. ^ Titanite Mineral Data, WebMineral.com
  4. ^ Titanite, Mindat.org
  5. ^ a b Dana, James Dwight; Ford, William Ebenezer (1915). Dana's Manual of Mineralogy for the Student of Elementary Mineralogy, the Mining Engineer, the Geologist, the Prospector, the Collector, Etc (13 ed.). John Wiley & Sons, Inc. pp. 299–300. Retrieved 2009-07-06.
  6. ^ Deer, W. A.; Howie, R. A.; Zussman, J. (1966). Introduction to the Rock-Forming Minerals. Longman. pp. 17–20. ISBN 0-582-44210-9.

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Titanite

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Titanite, or sphene (from Ancient Greek σφηνώ (sphēnṓ) 'wedge'), is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium...

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Titanites

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Titanites is an extinct ammonite cephalopod genus within the family Dorsoplanitidae, that lived during the late Tithonian of the Late Jurassic. Its fossils...

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Keilhauite

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as yttrotitanite) is a variety of the mineral titanite of a brownish black color, related to titanite in form. It consists chiefly of silicon dioxide...

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List of minerals

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Kyawthuite Varieties that are not valid species: Keilhauite (variety of titanite) Kerolite (variety of talc) (not approved by IMA) Krantzite (natural resin)...

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Leucoxene

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ore deposits as the result of the alteration of ilmenite, perovskite, or titanite. Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th...

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Nepheline syenite

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minerals common in minor amounts include sodium-rich pyroxene, biotite, titanite, iron oxides, apatite, fluorite, melanite garnet, and zircon. Cancrinite...

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List of RAL colours

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40% 165 141 69 H090L60C40 Faint Green 90° 60% 50% 165 139 44 H090L60C50 Titanite Yellow 90° 60% 60% 173 143 15 H090L60C60 Dusty Yellow 90° 70% 10% 178 170...

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Titanium

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titanium-containing minerals are anatase, brookite, ilmenite, perovskite, rutile, and titanite (sphene). Akaogiite is an extremely rare mineral consisting of titanium...

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Titadine

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compressed dynamite used in mining and manufactured in southern France by Titanite S.A. The explosive comes in the form of salmon-coloured tubes of a range...

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LGI Mle F1

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Service history Used by France Monaco Production history Manufacturer Titanite S.A. Specifications Mass 4.8 kg Length 605 mm Crew 1 Cartridge 51 mm grenade...

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Blairmorite

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in a matrix of analcime, sanidine and alkalic pyroxene with accessory titanite, melanite and nepheline. It is a leucocratic variety of analcimite (a foidite)...

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Astrophyllite

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felsic igneous rocks, astrophyllite is associated with feldspar, mica, titanite, zircon, nepheline, and aegirine. Common impurities include magnesium,...

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Metamictisation

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undergo metamictisation include allanite, gadolinite, ekanite, thorite and titanite. Ekanite is almost invariably found completely metamict as thorium and...

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Amphibolite

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amphibole, plagioclase, with subordinate epidote, zoisite, chlorite, quartz, titanite, and accessory leucoxene, ilmenite and magnetite which have a protolith...

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List of gemstones by species

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Tantalite Tektites Moldavite Tephroite Thomsonite Thaumasite Tinaksite Titanite (sphene) Topaz Tourmaline subgroup: Achroite (var.) Chrome (var.) Dravite...

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Silicate mineral

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Mg7(SiO4)3(F,OH)2 Clinohumite – Mg9(SiO4)4(F,OH)2 Datolite – CaBSiO4(OH) Titanite – CaTiSiO5 Chloritoid – (Fe,Mg,Mn)2Al4Si2O10(OH)4 Mullite (aka Porcelainite)...

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Ammonoidea

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upper part of the Jurassic and the lower part of the Cretaceous, such as Titanites from the Portland Stone of Jurassic of southern England, which is often...

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Malayaite

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calcium tin silicate mineral with formula CaSnOSiO4. It is a member of the titanite group. Malayaite was originally found in Perak (a state in Malaysia) and...

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Crystal habit

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Scalenohedral Scalenohedron-shaped, pointy ends calcite, rhodochrosite, titanite Tetrahedral Tetrahedron-shaped, triangular pyramid (four-sided) chalcopyrite...

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Glossary of chemical formulae

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orthosilicate 12017-08-2 Co2SnO4 cobalt(II) stannate 12139-93-4 Co2TiO4 cobalt(II) titanite 12017-38-8 Co3(AsO4)2 cobalt arsenate Co3(Fe(CN)6)2 cobalt(II) ferricyanide...

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Radiometric dating

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meteorites are best used. Older materials can be dated using zircon, apatite, titanite, epidote and garnet which have a variable amount of uranium content. Because...

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List of mineral symbols

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Tugtupite Ttp Tamarugite Tmr Tellurohauchecornite Thau Theoparacelsite Thp Titanite Ttn Tremolite Tr Tuhualite Tuh Tamboite Tmb Telluromandarinoite Tmda Theophrastite...

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Ijolite

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of nepheline. The accessory minerals are apatite, cancrinite, calcite, titanite and schorlomite, a dark-brown titaniferous variety of melanite-garnet....

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Pleochroism

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(strong): green / blue-green Peridot (low): yellow-green / green / colorless Titanite (medium): brown-green / blue-green Tourmaline (strong): blue-green / brown-green...

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Phonolite

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iron-rich olivine are common minor minerals. Accessory phases include titanite, apatite, corundum, zircon, magnetite and ilmenite. Phonolite's characteristic...

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Cannondale

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includes a battery module based on Toshiba's quick-charging lithium ion titanite rechargeable battery "SCiB". Cannondale developed a proprietary bottom...

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Syenite

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included, such as annite. Other common accessory minerals are apatite, titanite, zircon and other opaques. Most syenites are either peralkaline with high...

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