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acidic rock
Acidic rock is rock that is either siliceous, having a high content of silica (SiO2), or rock with a low pH. The two definitions are not equivalent, e.g., in the case of basalt, which is never high in pH (basic), but is low in Sio2. The term may be used in a third way, to refer to non-calcareous rocks, i.e., rocks testing negative for calcites by not bubbling if a 10% solution of HCl is applied in a spot test. == External links ==
* (Igneous Rocks ) * (Acid Rock )
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「acidic rock」の詳細全文を読む
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