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Vanadium- and chromium-bearing andalusite; occurrence and optical-absorption spectroscopy
William D. Carlson and George R. Rossman
Vanadium- and chromium-bearing andalusite; occurrence and optical-absorption spectroscopy
American Mineralogist (December 1988) 73 (11-12): 1366-1369
Vanadium- and chromium-bearing andalusite; occurrence and optical-absorption spectroscopy
American Mineralogist (December 1988) 73 (11-12): 1366-1369
Index Terms/Descriptors
- andalusite
- atomic absorption spectra
- chemical composition
- chromium
- crystal chemistry
- geochemistry
- Llano Uplift
- metals
- metamorphic rocks
- mineralogy
- minerals
- natural materials
- nesosilicates
- optical properties
- optical spectra
- orthosilicates
- pleochroism
- porphyroblastic texture
- schists
- silicates
- spectra
- Texas
- textures
- trace elements
- United States
- vanadium
- central Texas
- Honey Formation
Abstract
A graphitic quartz-muscovite schist in the Llano uplift of central Texas bears euhedral porphyroblasts of andalusite with unusual yellow-to-colourless pleochroism. They contain by weight, <=0.81% V (sub 2) O (sub 3) and 0.12% Cr (sub 2) O (sub 3) , but <0.07% Fe (sub 2) O (sub 3) , 0.22% TiO (sub 2) and 0.004% Mn (sub 2) O (sub 3) . The distinctive pleochroism results from the strong polarization dependence of the 420-nm absorption band.
ISSN: 0003-004X
EISSN: 1945-3027
Coden: AMMIAY
Serial Title: American Mineralogist
Serial Volume: 73
Serial Issue: 11-12
Title: Vanadium- and chromium-bearing andalusite; occurrence and optical-absorption spectroscopy
Affiliation: Univ. Tex., Dep. Geol. Sci.,
Austin, TX,
United States
Pages: 1366-1369
Published: 198812
Text Language: English
Publisher: Mineralogical Society of America,
Washington, DC,
United States
References: 19
Accession Number: 1989-011944
Categories: Mineralogy of silicatesGeochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Secondary Affiliation: Calif. Inst. Technol.,
USA,
United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 1989
