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In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed.
- Rock (Disambiguation)
Steinstossen, the Swiss variant of stone put, a competition...
- Stone
A stone is a piece of rock. It is a mass of hard, compacted...
- Stone (unit)
The stone or stone weight (abbreviation: st.) is an English...
- Gemstone
A gemstone (also called a fine gem, jewel, precious stone,...
- Stone (Disambiguation)
Stone (disambiguation) Look up stone in Wiktionary, the free...
- Rock (Disambiguation)
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Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. [1] Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface.
3 days ago · Stone Age, prehistoric cultural stage, or level of human development, characterized by the creation and use of stone tools, the oldest known of which date to some 3.3 million years ago. The Stone Age is usually divided into three separate periods: Paleolithic, Mesolithic, and Neolithic.
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