High volatile content would be most likely associated with:
a. rhyolitic magma
b. basaltic magma
c. gabbroic magma
d. porphyritic magma
a
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A mineral deposit can be classified as an ore deposit when
A. it contains valuable gemstone quality minerals. B. it contains valuable fossil fuels. C. valuable metals are present in the deposit. D. valuable metals in the deposit can be mined at a profit.
Most metals, such as iron and copper, do not occur in a pure state in Earth's crust, but occur within ________
A) ores B) sediments C) igneous rocks D) the O horizon of the soil E) organic materials
Minerals have a wide variety of applications. Select five of the following substances and identify what minerals they contain
What will be an ideal response?
The last glacial minimum ended approximately 15,000 years ago.
Answer the following statement true (T) or false (F)