Troctolite
Mafic rock | |
 Troctolite 76535 from the Apollo 17 landing site | |
| Composition | |
|---|---|
| olivine, calcic plagioclase, minor pyroxene |
Troctolite cumulate of crystals that have fractionated from melt.[1]
Troctolite is found in some layered intrusions such as in the Archean Windimurra intrusion of Western Australia, the Voisey's Bay nickel-copper-cobalt magmatic sulfide deposit of northern Labrador,[2] the Stillwater igneous complex of Montana, the Duluth Complex of the North American Midcontinent Rift,[3] and the Tertiary Rhum layered intrusion of the island of Rùm, Scotland.[4] Troctolite is also found, for example, in the Merensky Reef of the Bushveld Igneous Complex, South Africa and in the Lizard complex in Cornwall.[5]
References
Wikimedia Commons has media related to Troctolite.
- ISSN 0026-461X.
- ^ Sulphide segregation in the Mushuau Intrusion of northern Labrador as recorded by nickel-in-olivine magmatic stratigraphy Archived 2017-10-23 at the Wayback Machine abstract, BRADLEY, L.A. and SYLVESTER, P.J., Department of Earth Sciences, Memorial University of Newfoundland, St. John's, NF, A1B 3X5
- ISSN 0148-0227.
- ^ http://www.turnstone.ca/rhumal.htm Troctolite (allivalite): Isle of Rhum, northwestern Scotland
- ^ The Lizard
- Blatt, Harvey and Robert J. Tracy, 1996, Petrology: Igneous, Sedimentary and Metamorphic, 2nd ed., p. 72, Freeman, ISBN 0-7167-2438-3
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