dolerite جيدة لسحق

Dolerite SlideShare

• Introduction • Mineralogy • Textures • Classification of dolerite • Dolerite dyke • Formation of dolerite • Distribution • Uses • Conclusion

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Microgabbro/ dolerite OpenLearn Open University

A brief description of the nature of microgabbro or dolerite

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West Rock Dolerite (CTJwr;0)

Geologic unit mapped in Connecticut: West Rock Dolerite Darkgray to greenishgray (weathers bright orange to brown), medium to finegrained, grading from basalt near contacts to finegrained gabbro in the interior, generally massive with welldeveloped columnar jointing, composed of plagioclase and pyroxene with accessory opaques and ...

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Dolerite definition and meaning | Collins English Dictionary

Dolerite definition: a dark basic intrusive igneous rock consisting of plagioclase feldspar and a pyroxene ,... | Meaning, pronunciation, translations and examples

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Diabase Wikipedia

Diabase ( / ˈ d aɪ. ə b eɪ s /) or dolerite or microgabbro is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.

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GC58TB1 MZP Dolerite (Earthcache) in Eastern Cape, …

MZP Dolerite (GC58TB1) was created by iPajero on 7/13/2014. It's a Other size geocache, with difficulty of , terrain of It's located in Eastern Cape, ...

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Tasmanian dolerite: c. 180 million years ABC Hobart ...

It's a clichto say that the geology of a place defines so much of what occurs on it, but the case of dolerite in Tasmania truly bears this theory out.

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Division of Mines and Mineral Resources Report …

Division of Mines and Mineral Resources Report 1991/22 Some physical properties of dolerite by Sloane Abstract Dolerite, an igneous rock, is exposed over half of

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Diabase Igneous Rocks Sandatlas

Diabase is composed of plagioclase feldspar (mostly labradorite) and pyroxene ().The crystals that make up dolerite are usually visible to the naked eye, but sometimes porphyritic rocks of basaltic composition with pyroxene and especially plagioclase phenocrysts are also named that way.

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Diabase | rock |

Diabase, also called Dolerite, fine to mediumgrained, dark gray to black intrusive igneous is extremely hard and tough and is commonly quarried for crushed stone, under the name of trap.

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