Volcanically derived rocks contain the presence of glass indicating

Question # 00270544 Posted By: echo7 Updated on: 05/03/2016 01:57 PM Due on: 06/02/2016
Subject Geology Topic General Geology Tutorials:
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3. Volcanically derived rocks contain the presence of glass indicating:

A. Rapid cooling B. Slow cooling C. Magma composition D. constant change in water content.

4. Labradorite is common mineral in volcanic rocks belonging to the:

A. Olivine group B. Pyroxene group C. Plagioclase group D. Mica group

5. Ruby is type of:

A. Garnet B. Corundum C. Proxene D. Feldspar

6. Apatite is:

A. harder than orthoclase and softer than quartz

B. harder than fluorite and softer than orthoclase

C. harder than calcite but softer than fluorite

D. softer than both orthoclase and fluorite

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  1. Tutorial # 00265781 Posted By: echo7 Posted on: 05/03/2016 01:57 PM
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