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Mineral collectors find a variety of reasons to collect minerals. Many minerals are strikingly beautiful and collected for their aesthetic value. Others collect to learn more about mineralogy, the local mining industry and/or local geology. Some simply enjoy exploring the outdoors and socializing and trading with other mineral collectors.
Amateur geology or rock collecting (also referred to as rockhounding in the United States and Canada) is the non-professional study and hobby of collecting rocks and minerals or fossil specimens from the natural environment. [1] [2] In Australia, New Zealand and Cornwall, the amateur geologists call this activity fossicking. [3]
While fossils can be found in all grain types, more detailed specimens are found in the fine grained material. [2] A second type of burial is the non-clastic rock, form where the rock is made up of the precipitation of compacted fossil material, types of rock include limestone and coal.
Crystals of serandite, natrolite, analcime, and aegirine from Mont Saint-Hilaire, Quebec, Canada. Mineralogy is an active science in which minerals are discovered or recognised on a regular basis. Use of old mineral names is also discontinued, for example when a name is no longer considered valid.
Some minerals made into gemstones may display a chatoyancy or cat's eye effect, ... Rock crystal (var.) Shocked quartz (var.) Smoky quartz (var.) Quartzite; R–Z.
The overlying Devonian rocks include the Columbus Limestone to the east of the Findlay Arch and the Detroit River Group carbonates to the west. The angular unconformity between lower Silurian rocks is marked in some places by phosphate beds, that preserve bones and teeth. A cast of a Dunkleosteus fossil found near Cleveland, Ohio
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