Hostname: page-component-848d4c4894-xfwgj Total loading time: 0 Render date: 2024-06-14T16:12:07.130Z Has data issue: false hasContentIssue false
  • English
  • Français

Coexisting hornblende and cummingtonite from the Khetri copper belt, Rajasthan, India

Published online by Cambridge University Press:  05 July 2018

S. P. Das Gupta
S. P. Das Gupta*
Affiliation:
Geological Survey of India, 5-5-449 Mukaramjahi Road, Hyderabad-1, A.P., India
Get access Rights & Permissions [Opens in a new window]

Summary

Coexisting hornblende and cummingtonite in an amphibolite near Peliwali have been analysed. The rock formed by Fe-Mg addition and Ca removal from pre-existing amphibole quartzites within the altered wall rocks surrounding sulphide lodes. The amphibole compositions are controlled by the bulk composition of the rock. The Mg/(Mg+Fe2+) ratio of the hornblende (0·66) is only slightly higher than that of the cummingtonite (0·64).

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 299 , September 1972 , pp. 890 - 893
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

Chowdhury, (A.), 1970. Min. Mag. 37, 923-8.CrossRefGoogle Scholar
Das Gupta, (S.P.), 1962. Ind. Minerals, 16, 299-300.Google Scholar
Das Gupta, (S.P.), 1964. Res. Papers in Petrology (Ed. M. V. N. Murthy), Geol. Surv. Ind., 91-112.Google Scholar
Das Gupta, (S.P.), 1965. Mem. Geol. Surv. Ind., 98.Google Scholar
Das Gupta, (S.P.), 1967. Min. Mag. 36, 22-8.Google Scholar
Eskola, (P.), 1950. Amer. Min. 35, 728.Google Scholar
Heron, (A.M.), 1922. Rec. Geol. Surv. Ind. 54, 345-97.Google Scholar
Kisch, (H.J.) and Warnaars, (F.W.), 1969. Contr. Min. Petr. 24, 245-67.CrossRefGoogle Scholar
Klein, (C.), 1968. Journ. Petrology, 9, 281-330.CrossRefGoogle Scholar
Robinson, (P.) and JArFe, (H.W.), 1969. Min. Soc. Amer. Spec. Paper 2, 251-74.Google Scholar
Klein, (C., Jr.), and Ross, (M.), 1969. Contr. Min. Petr. 22, 248-58.Google Scholar
Shido, (F.), 1958. Jour. Fac. ScL Univ. Tokyo. Sec. II, 11, 131.Google Scholar
Seitsaari, (J.), 1952. Ann. Acad. Sci. Fennicae. Ser. A. III, 30, 1–20.Google Scholar
Vernon, (R.H.), 1962. Amer. Min. 47, 360-70.Google Scholar
Watters, (W.A.), 1959. N.Z. Journ. Geol. Geophys. 2, 248-56.CrossRefGoogle Scholar