Petrology of chloritoid and staurolite rocks North of Stonehaven, Kincardineshire
By: Williamson, Douglas H
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Material type: 
ArticleDescription: 353-361pp.Subject(s): Petrology - Eastern Scotland | Chloride rock - North Stonehaven - Kincardineshire - Scotland | Staurotite rock - North Stonehaven - Kincardineshire - Scotland
In:
Geological magazine : Vol. 90 Iss. 1-6 Year. 1953Summary: Abstract
In the pelitic rocks of this classical section it appears that, chemically, a Fe2O3: Al2O3 ratio of about 0·40 is critical for the formation of chloritoid or staurolite. With this ratio both minerals are possible, but if the value exceeds a figure somewhere between 0·47 and 0·55 staurolite cannot form, a reddish-brown biotite appearing instead. Physically, a certain minimum temperature is necessary before staurolite can appear and below this chloritoid is the equilibrium phase.
| Item type | Current location | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Article
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Library and Information Centre Periodical Section | Bound Journal Collection | Not for loan | 002541_60 | ||
Serials/Scientific Journal
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Library and Information Centre Periodical Section | Bound Journal Collection | 550 GEO (Browse shelf) | Available | 002541 |
Abstract
In the pelitic rocks of this classical section it appears that, chemically, a Fe2O3: Al2O3 ratio of about 0·40 is critical for the formation of chloritoid or staurolite. With this ratio both minerals are possible, but if the value exceeds a figure somewhere between 0·47 and 0·55 staurolite cannot form, a reddish-brown biotite appearing instead. Physically, a certain minimum temperature is necessary before staurolite can appear and below this chloritoid is the equilibrium phase.
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