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VI.—Additional Note on the Blue Hornblende of Mynydd Mawr

Published online by Cambridge University Press:  01 May 2009

Alfred Harker
Alfred Harker
Affiliation:
Fellow ofSt. John's College, Cambridge.
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Extract

In the short description of the Mynydd Mawr rock given in the May Number of this Magazine (p. 221), I drew attention to a remarkable blue hornblende, which I was unable to refer to any known variety. In the character of its absorption and pleochroism it differed widely from both glaucophane and arfvedsonite, although allied to them in some of its properties, such as its extreme fusibility, splinters melting easily in the flame of a candle.

Type
Original Articles
Information
Geological Magazine , Volume 5 , Issue 10 , October 1888 , pp. 455 - 456
Copyright
Copyright © Cambridge University Press 1888

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References

page 455 note 1 Zeitsch. d. Deutsch. geol. Gesellsch. vol. xl. p. 138, 1888.Google Scholar

page 456 note 1 Phil. Trans, vol. clxxiv. part i. p. 283, 1873.Google Scholar