Volcanically derived rocks contain the presence of glass indicating

| March 13, 2016

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

Order your essay today and save 20% with the discount code: ESSAYHELP
Order your essay today and save 20% with the discount code: ESSAYHELPOrder Now