Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-25T07:47:39.966Z Has data issue: false hasContentIssue false
  • English
  • Français

Black elbaite from Corrego do Urucum, Minas Gerais, Brazil

Published online by Cambridge University Press:  05 July 2018

B. E. Prescott  and
K. Nassau
B. E. Prescott
Affiliation:
Bell Laboratories, Murray Hill, New Jersey 07974, U.S.A.
K. Nassau
Affiliation:
Bell Laboratories, Murray Hill, New Jersey 07974, U.S.A.
Get access Rights & Permissions [Opens in a new window]

Summary

Black tourmaline from Corrego do Urucum, Brazil, is an elbaite coloured by iron and manganese with blue, green, and pink regions. Polarized spectra show the absorption bands expected in elbaite (Fe-caused blue and green, and pink, which is probably caused by Mn). The colour distribution in the transverse sections does not conform to the symmetry of tourmaline and changes along the length of the crystals. Two distinct growth stages are indicated, separated by a partial dissolution and followed by another dissolution.

Type
Research Article
Information
Mineralogical Magazine , Volume 42 , Issue 323 , September 1978 , pp. 357 - 359
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1978

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anon, ., 1973. Mineral. Record, 4, 275-6.Google Scholar
Bershov, (L. V.), Martirosyan, (V. O.), Marfunin, (A. S.), Platonov, (A. N.), and Tarashchan, (A. N.), 1969. Sov. Phys.—Crystallog. 13, 629-30.Google Scholar
Deer, (W. A.), Howie, (R. A.), and Zussman, (J.), 1962. Rock-Forming Minerals (J. Wiley and Sons Inc., New York), 1, 300-19 .Google Scholar
Manning, (P. G.), 1969. Can. Mineral. 9, 678-90.Google Scholar
Nassau, (K.), 1975. Am. Mineral. 60, 710-13.Google Scholar
Smith, (G.) and Strens, (R. G. J.), 1976. In The physics and chemistry of mineral and rocks, ed. Strens, R. G. J. (J. Wiley and Sons Inc., New York), 583-64.Google Scholar
Voskresenskaya, (L. E.) and Grum-Grzhimailo, (S. V.), 1967. Soy. Phys.—Crystallog. 12, 311-12.Google Scholar
Wilkins, (R. W. T.), Farrell, (E. F.), and Naiman, (C. S.), 1969. J. Phys. Chem. Solids, 30, 43–56.CrossRefGoogle Scholar