RECORD: Darwin, C. R. n.d. Abstract of Rose, Sur les roches qu'on nomme grunstein et grunstein porphyrique. CUL-DAR40.43. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2021. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin.
M. G. Rose. 1835. Sur les roches qu'on nomme grunstein et grunstein porphyrique. Annales des Mines, série 3, vol. 8: 5-32.
[43]
Annales des Mines 3d series vol 8
M. G. Rose on Grunstein
Porphyres dioritique, couteau albite & amphibole
(from Fernando in Chile
Porphyres Amphilique couteau
(a) Labrador & augite –
Labrador & Albite – how to distinguish
N.B Labrador, hard to distinguish from Albite, latter however clearly at 93° & in this rock, crystal of feldspar
(a) are placed lengthways & parallel, just like in Cordillera – rocks
[Labradorite] at 88° or 134°
Dolerite in Labrador & Augite
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022