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Porphyry – Textural form of igneous rock with large grained crystals in a fine matrix; Pumice – Extremely vesicular volcanic rock, typically light-colored; Pyroxenite – Igneous rock - a coarse grained plutonic rock composed of >90% pyroxene; Quartz diorite – Igneous, plutonic rock – A diorite with >5% modal quartz
Uluru (Ayers Rock) is a large sandstone formation in Northern Territory, Australia.. Sedimentary rocks can be subdivided into four groups based on the processes responsible for their formation: clastic sedimentary rocks, biochemical (biogenic) sedimentary rocks, chemical sedimentary rocks, and a fourth category for "other" sedimentary rocks formed by impacts, volcanism, and other minor processes.
The stone remains widely used in the United Kingdom and Ireland for human body weight: in those countries people may commonly be said to weigh, e.g., "11 stone 4" (11 stones and 4 pounds), rather than "72 kilograms" as in most of the other countries, or "158 pounds", the conventional way of expressing the same weight in the US and in Canada. [38]
The earliest evidence for deben is from the Early Dynastic Period.It was found at the site of Buto in Nile Delta.The weighing stone was uncovered in an archaeological context from Second Dynasty, in the so-called "labyrinth" building, it bears the inscription of the "friendly is the heart of Horus, director" (of the installation) "Hemsemenib".
The curling stone (also sometimes called a rock in North America) is made of granite and is specified by the World Curling Federation, which requires a weight between 19.96 and 17.24 kilograms (44 and 38 lb), a maximum circumference of 914 millimetres (36 in), and a minimum height of 114 millimetres (4 + 1 ⁄ 2 in). [31]
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Several forms of competition were employed in stone-lifting, each sometimes using a particular type of stone. Ishizashi (石差, "various stones") was the simplest form, requiring competitors to hoist a rock of about 70 kg (154 lb), known as a sashi-ishi (サシ石), from the ground to above the head. It was permissible for participants to ...