Titantaramellite (original) (raw)

A valid IMA mineral species

About TitantaramelliteHide

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Formula:

Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx

Colour:

dark brown to black

Crystal System:

Orthorhombic

Name:

Named as the titanium end-member of a series with taramellite.

Co-Type Localities:

ⓘ Gun claim, Wilson Lake, Itsi Mountain, Watson Lake mining district, Yukon, Canada
ⓘ Madrelena Mine, Tres Pozos, Baja California, Mexico
ⓘ Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
ⓘ Esquire No. 1 claim, Rush Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
ⓘ Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa County, California, USA
ⓘ Pacific Cement and Aggregate Company quarry, Santa Cruz, Santa Cruz County, California, USA
ⓘ Baumann prospect (Bauman Ranch), Dumtah, Tulare County, California, USA

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3980:8

9ca61e9f-081e-4e27-ae2b-d469afcccedc

IMA Classification of TitantaramelliteHide

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IMA Formula:

Ba4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx

Type description reference:

Classification of TitantaramelliteHide

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9.CE.20

9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions

64.3.1.2

64 : CYCLOSILICATES Rings with Other Anions and Insular Silicate Groups
3 : Rings with Other Anions and Insular Silicate Groups: 4-membered rings with [Si2O7] dimers

17.5.35

17 : Silicates Containing other Anions
5 : Borosilicates

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of TitantaramelliteHide

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Transparency:

Transparent, Translucent, Opaque

Colour:

Dark brown to black

Density:

4.05 g/cm3 (Measured) 3.93 g/cm3 (Calculated)

Optical Data of TitantaramelliteHide

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RI values:

_n_α = 1.739 - 1.753 _n_β = 1.749 - 1.761 _n_γ = 1.770 - 1.782

2V:

Measured: 45° to 77°, Calculated: 64° to 70°

δ = 0.031

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Optical Extinction:

X = c; Y = b; Z = a.

Comments:

X = Y = yellow-brown; Z = opaque

Chemistry of TitantaramelliteHide

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Mindat Formula:

Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx

Crystallography of TitantaramelliteHide

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Crystal System:

Orthorhombic

Class (H-M):

m m m _(_2/_m_2/_m_2/m ) - Dipyramidal

Cell Parameters:

a = 12.21 Å, b = 13.95 Å, c = 7.13 Å

Ratio:

a:b:c = 0.875 : 1 : 0.511

Unit Cell V:

1,214.45 ų (Calculated from Unit Cell)

Comment:

Space Group: [Pnmm:]

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0000773	Titantaramellite	Mazzi F, Rossi G (1980) The crystal structure of taramellite American Mineralogist 65 123-128		1980	Rush Creek, Fresno County, California, USA	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Comments:

No published powder pattern data.

Geological EnvironmentHide

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Type Occurrence of TitantaramelliteHide

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Co-Type Localities:

ⓘ Gun claim, Wilson Lake, Itsi Mountain, Watson Lake mining district, Yukon, Canada
ⓘ Madrelena Mine, Tres Pozos, Baja California, Mexico
ⓘ Esquire No. 7 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
ⓘ Esquire No. 1 claim, Rush Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA
ⓘ Trumbull Peak Ba-silicate deposit, Trumbull Peak, Clearing House, Clearing House Mining District, East Belt, Mariposa County, California, USA
ⓘ Pacific Cement and Aggregate Company quarry, Santa Cruz, Santa Cruz County, California, USA
ⓘ Baumann prospect (Bauman Ranch), Dumtah, Tulare County, California, USA

General Appearance of Type Material:

As well-formed crystals, equidimensional to tabular.

Place of Conservation of Type Material:

No designated type material.

Associated Minerals at Type Locality:

Reference:

Alfors, J.T., Pabst, A. (1984) Titanian taramellites in western North America. American Mineralogist: 69: 358-373.

Synonyms of TitantaramelliteHide

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Other Language Names for TitantaramelliteHide

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Relationship of Titantaramellite to other SpeciesHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for TitantaramelliteHide

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References for TitantaramelliteHide

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Localities for TitantaramelliteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.