THE TANCO PEGMATITE AT BERNIC LAKE, MANITOBA. XIII. EXOCONTACT TOURMALINE

@inproceedings{Selway2000THETP,
  title={THE TANCO PEGMATITE AT BERNIC LAKE, MANITOBA. XIII. EXOCONTACT TOURMALINE},
  author={Julie B. Selway and Milan Novăk and Petr {\vC}ern{\'y} and Frank C. Hawthorne},
  year={2000}
}
The petalite-subtype Tanco granitic pegmatite, southeastern Manitoba, intrudes an amphibolite (metagabbro), which is metasomatically altered to tourmaline and magnesian annite close to the contact. The composition of exocontact tourmaline depends on the composition of the host rock and on the composition and amount of fluid injected from the pegmatite-forming melt into the host rock. Two compositional groups of tourmaline occur in the exocontacts at Tanco: (1) common feruvite – schorl – dravite… CONTINUE READING

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