Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-27T08:07:06.892Z Has data issue: false hasContentIssue false
  • English
  • Français

A chromian tourmaline from Swat, West Pakistan

Published online by Cambridge University Press:  05 July 2018

M. Qasim Jan ,
D. R. C. Kempe  and
R. F. Symes
M. Qasim Jan
Affiliation:
Department of Geology, University of Peshawar, West Pakistan
D. R. C. Kempe
Affiliation:
Department of Mineralogy, British Museum (Natural History), London S.W. 7.
R. F. Symes
Affiliation:
Department of Mineralogy, British Museum (Natural History), London S.W. 7.
Get access Rights & Permissions [Opens in a new window]

Summary

Traces of a green chromian tourmaline occur in calcareous rocks in contact with serpentinite near Alpurai, Swat, West Pakistan. The petrography of the rocks and the optical properties of the tourmaline are presented along with its chemistry (it contains over 8 % Cr2O3 and about 0·2 % V2O3). The mineral is compared with other chromian tourmalines and its paragenesis discussed: it is thought to have been produced by silica-rich hydrothermal (or gaseous) solutions, which have crystallized as thin quartz veins in the calcareous rocks, introducing boron and other constituents.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 298 , June 1972 , pp. 756 - 759
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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

Bassett, (H.), 1956a. Records Geol. Survey Tanganyika, 3 (for 1953), 93-6.Google Scholar
Bassett, (H.), 1956b. Ibid., 100- 3.Google Scholar
Cossa, (A.) and Arzruni, (A.), 1883. Zeits. Kryst. 7, 1-16.Google Scholar
Davies, (R.G.), 1962. Geol. Bull. Panjab Univ. 2, 51-2.Google Scholar
Deer, (W.A.), HOWlE, (R.A.), and Zussman, (J.), 1962. Rock-forming minerals, 1, London, Longmans.Google Scholar
Jan, (M.Q.), 1968. Geol. Bull. Univ. Peshawar, 3, 10.11.Google Scholar
Jan, (M.Q.), in press, 1970. Proc. Nat. Sere. Min. Development, Lahore.Google Scholar
Jan, (M.Q.), and Tahirkheli, (R.A.K.), 1969. Geol. Bull. Univ. Peshawar, 4, 1.13.Google Scholar
Kempe, (D.R.C.), 1965. Records Geol. Survey Tanganyika, 11 (for 1961), 44–53.Google Scholar
McKIB, (D.), 1958. Ibid. 5 (for 1955), 81–94.Google Scholar
Martin, (N.R.), Siddiqui, (S.F.A.), and King, (B.H.), 1962. Geol. Bull. Panjab Univ. 2, 1–13.Google Scholar
Peltola, (E.), Vuorelainen, (Y.), and Hakli, (T.A.), 1968. Bull. Geol. Soc. Finland, 40, 35.8.10.17741/bgsf/40.004CrossRefGoogle Scholar
[Shenderova, ( A. G.)] (Min. Mag. Lvov. Geol. Soc.), no. 9, 324-6 [M.A. 13-187].Google Scholar
Sweatman, (T.R.) and Long, (J.V.P.), 1969. Journ. Petrology, 10, 332.76.10.1093/petrology/10.2.332CrossRefGoogle Scholar