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Scapolite

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System:
Tetragonal
Member of:
Name:
Named in 1800 by José Bonifácio de Andrada e Silva from the Greek ζκαποζ meaning "a shaft" in allusion to the long prismatic habit of the crystals.
Series Formula:
Na4Al3Si9O24Cl to Ca4Al6Si6O24CO3
A series between Marialite and Meionite

This term generally refers to just the marialite-meionite series, not the full scapolite group, so excludes silvialite. Used as a generic term when the exact chemical composition in the solid solution series has not been determined.

"Wernerite" is an intermediate member of the marialite-meionite series, which may be deserving of species status (see Dana, 8th Ed.).

May be altered into pinite.




Visit gemdat.org for gemological information about Scapolite.

Classification of Scapolite

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Crystallography of Scapolite

Crystal System:
Tetragonal

Crystallographic forms of Scapolite

Crystal Atlas:
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Scapolite no.30 - Goldschmidt (1913-1926)
Scapolite no.32 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Relationship of Scapolite to other Species

Member of:
Other Members of Group:
MarialiteNa4Al3Si9O24Cl
MeioniteCa4Al6Si6O24CO3
Silvialite(Ca,Na)4(Al6Si6O24)(SO4,CO3)

Other Names for Scapolite

Name in Other Languages:

Other Information

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

References for Scapolite

Reference List:
Zeitschrift für Kristallographie (1931): 81: 110.

C. O. Ingamells and J. Gittins (1967): The stoichiometry of scapolite. Can. Mineral. 9, 214-236.

Levien, L. and Papike, J.J. (1976): Scapolite crystal chemistry: Aluminium-silicon distributions, carbonate group disorder, and thermal expansion. Amer. Mineral., 61, 864-877.

Strunz, H., Wilk, H. (1976): Violetter Skapolith von Edelsteinqualität aus Ostafrika. Aufschluss 27, 389-391 (in German).

Peterson, R.C., Donnay, G. and LePage, Y. (1979): Sulfate disorder in seapolite. Can Mineral., 17, 53-61.

Neues Jahrbuch für Mineralogie, Abhandlungen (1984): 149, 309.

Pan, Y., Fleet, M.E., and Ray, G.E. (1994a) Scapolite in two Canadian gold deposits: Nickel Plate, British Columbia and Hemlo, Ontario. Canadian Mineralogist: 32: 825-837.

Teertstra, D.K. and Sherriff, B.L. (1996): Scapolite cell-parameter trends along the solid-solution series. American Mineralogist, 81, 169-180.

Teertstra, D.K. and Sherriff, B.L. (1997) Substitutional mechanisms, compositional trends and the end-member formulae of scapolite. Chemical Geology, 136, 233-260.

Sokolova, E., Hawthorne, F.C. (2008): The crystal chemistry of the scapolite-group minerals. I. Crystal structure and long-range order. The Canadian Mineralogist 46, 1527-1554.

Internet Links for Scapolite

Specimens:
The following Scapolite specimens are currently listed for sale on minfind.com.

Localities for Scapolite

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.
Mineral and/or Locality  
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