Comments on: Diabase + pegmatite http://antimonite.blogsome.com/2009/06/14/diabase-pegmatite/ A blog about geology, geoscience, paleontology and related topics Thu, 03 Dec 2009 15:33:53 +0000 http://wordpress.org/?v=1.5.1-alpha by: Antimonite http://antimonite.blogsome.com/2009/06/14/diabase-pegmatite/#comment-245 Mon, 15 Jun 2009 11:31:18 +0100 http://antimonite.blogsome.com/2009/06/14/diabase-pegmatite/#comment-245 Cat: Thanks for your input. No need to send pictures, its interesting enough for me just to learn of similarities. Cat: Thanks for your input. No need to send pictures, its interesting enough for me just to learn of similarities.

]]> by: Cat http://antimonite.blogsome.com/2009/06/14/diabase-pegmatite/#comment-244 Mon, 15 Jun 2009 09:13:10 +0100 http://antimonite.blogsome.com/2009/06/14/diabase-pegmatite/#comment-244 I have something similar in my field area. The area consists of 1Ga augen gneisses which have been intruded by, 140 to 130Ma, dolerite/diabase, quartz porphyry and bostonite dykes as well as granite and syenite plutons. In one instance there is a ~20m wide dolerite dyke cut by a half metre to a metre wide dolerite dyke. The smaller of the two is filled with xenocrysts of feldspar and quartz. If you like I can send you some photos. Have a great day Cat I have something similar in my field area. The area consists of 1Ga augen gneisses which have been intruded by, 140 to 130Ma, dolerite/diabase, quartz porphyry and bostonite dykes as well as granite and syenite plutons. In one instance there is a ~20m wide dolerite dyke cut by a half metre to a metre wide dolerite dyke. The smaller of the two is filled with xenocrysts of feldspar and quartz. If you like I can send you some photos.

Have a great day
Cat

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