Parthéite (original) (raw)

A valid IMA mineral species

About ParthéiteHide

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Formula:

Ca2(Si4Al4) O15 (OH)2 · 4H2O

Colour:

White, colorless in transmitted light

Specific Gravity:

2.39 - 2.45

Crystal System:

Monoclinic

Name:

Named in honor of Erwin Parthé (29 March 1928, Vienna, Austria - 28 August 2006, Geneva, Switzerland), crystallographer and professor at the University of Geneva, Switzerland.

This page provides mineralogical data about Parthéite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3127:7

6083acdc-b095-4362-9107-5ec2f0887f50

IMA Classification of ParthéiteHide

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IMA Formula:

Ca2(Si4Al4)O15(OH)2 · 4H2O

Type description reference:

Classification of ParthéiteHide

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9.GB.35

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings

77.2.4.1

77 : TECTOSILICATES Zeolites
2 : Zeolite group - related species

16.9.19

16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca

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 ParthéiteHide

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Colour:

White, colorless in transmitted light

Cleavage:

Distinct/Good
on {100}, {110}

Density:

2.39 - 2.45 g/cm3 (Measured) 2.41 g/cm3 (Calculated)

Optical Data of ParthéiteHide

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RI values:

_n_α = 1.547 - 1.550 _n_β = 1.549 - 1.552 _n_γ = 1.559 - 1.565

2V:

Measured: 45° to 48°, Calculated: 50°

δ = 0.012 - 0.015

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

Dispersion:

r > v, moderate

Chemistry of ParthéiteHide

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Mindat Formula:

Ca2(Si4Al4) O15 (OH)2 · 4H2O

Common Impurities:

Ti,Fe,Mn,Mg,Na,K,C

Crystallography of ParthéiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 21.555 Å, b = 8.761 Å, c = 9.3 Å
β = 91.55°

Ratio:

a:b:c = 2.46 : 1 : 1.062

Unit Cell V:

1,755.60 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Doganbaba, Turkey

Geological EnvironmentHide

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Geological Setting:

in veins cutting a gabbroic intrusive complex (Denezhkin Kamen complex, Russia)

Type Occurrence of ParthéiteHide

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Place of Conservation of Type Material:

Museum of Natural History, Geneva, Switzerland; The National Museum of Natural History, Washington, DC, USA; The Natural History Museum, London, England.

Geological Setting of Type Material:

in rodingite dikes within an ophiolite

Reference:

Sarp, H., Deferne, J., Bizouard, H., Liebach, B.W. (1979) La parthéite, CaAl2Si2O8·2H2O, un nouveau silicate naturel d'aluminium et de calcium. Schweizerische Mineralogische und Petrographische Mitteilungen: 59: 5-13.

Synonyms of ParthéiteHide

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Other Language Names for ParthéiteHide

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Relationship of Parthéite to other SpeciesHide

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Other Members of this group:

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 ParthéiteHide

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References for ParthéiteHide

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Reference List:

Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist, 35 (6) 1571-1606

Localities for ParthéiteHide

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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.