File:Day 21 - Rocks and Minerals (8009824521).jpg
Day_21_-_Rocks_and_Minerals_(8009824521).jpg (320 × 320 pixels, file size: 64 KB, MIME type: image/jpeg)
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| Description |
Rocks and Minerals The Manchester Museum rock and mineral collections are one of the finest in the country. In total, there are about 22,000 mineral specimens and 15,000 rocks. Spectacular examples are on display. Rocks are made up of grains of minerals, naturally occurring geological substances with a definite composition and crystal structure. The study of mineralogy is really only chemistry and physics of natural materials. These samples are in the case that shows how natural geological processes can alter minerals and rocks. Water is a good solvent. Hot water trapped in rocks deep beneath the Earth can dissolve minerals that are not significantly soluble at the surface. As solutions escape along faults into rocks where the temperature is lower, minerals crystallise as their limits of solubility are exceeded. Metals can be concentrated into ore deposits in this way.
Brassy yellow chalcopyrite with galena (Foxdale Mine, Laxey, Isle of Man)
Metalic grey elongated stibnite crystals with white encrusting calcite (Kirgizia, Kazakhstan) |
| Date | |
| Source | Day 21 - Rocks and Minerals |
| Author | akhenatenator |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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This image was originally posted to Flickr by akhenatenator at https://flickr.com/photos/86012097@N08/8009824521 (archive). It was reviewed on 18 December 2017 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
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| current | 09:20, 18 December 2017 | | 320 × 320 (64 KB) | Donald Trung (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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