QUESTION: What makes rocks hard? ANSWER: When you go out for a walk and look at the stones around you, you will see that there are big stones, small stones and tiny ones. All these stones are pieces ...
Four rock types (quartz mica gneiss, schist, quartzite and calc-silicate) located in the Satluj and Alaknanda valleys were used to test whether a Schmidt hammer can be used to distinguish rock ...
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