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Amateur geology (known as rockhounding in the United States) is the recreational study and hobby of collecting rocks and mineral specimens from their natural environment. ==Collecting== The first amateur geologists were prospectors looking for valuable minerals and gemstones for commercial purposes. Eventually, however, more and more people have been drawn to amateur geology for recreational purposes, mainly for the beauty that rocks and minerals provide. One reason for the rise in popularity of amateur geology is that a collection can begin by simply picking up a rock. There are also many clubs and groups that search for specimens and compare them in groups as a hobby. Information on where to find such groups can be found at libraries, bookstores, and "gem and mineral shows". Tourist information centers and small-town chambers of commerce can also supply valuable local information. The Internet can also be a useful search tool as it can help find other amateur geologists. The amateur geologist's principal piece of equipment is the geologist's hammer. This is a small tool with a pick-like point on one end, and a flat hammer on the other. The hammer end is for breaking rocks, and the pick end is mainly used for prying and digging into crevices. The pick end of most rock hammers can dull quickly if struck onto bare rock. Rock collectors may also bring a sledgehammer to break hard rocks. Good places for a collector to look are quarries, road cuts, rocky hills and mountains, and streams. There are many different laws in place regarding the collection of rocks and minerals from public areas, so it is advisable to read up on local laws before prospecting. Rock and mineral collecting is prohibited in most if not all national parks in the United States. 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「Amateur geology」の詳細全文を読む スポンサード リンク
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