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porcellanite

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1
porcellanite
porcellanite Min. (pɔəˈsɛlənaɪt) Also -ela-. [a. Ger. porzellanit (J. T. A. Peithner 1794), f. porzellan porcelain + -it, -ite1. So F. porcellanite.] A hard naturally-baked clay, somewhat resembling jasper: also called porcelain jasper. Also, a synonym of porcelain-spar (Chester).1796 Kirwan Elem. M... Oxford English Dictionary
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Porcellanite
Porcellanite has been found, for example, in Northern Ireland, Poland and the Czech Republic. Porcellanite is also commonly found in the Northern Territory of Australia. wikipedia.org
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Mullite
Porcellanite Mullite (porcelainite) can be found as a constituent mineral in a type of thermally-metamorphosed rock called porcellanite. wikipedia.org
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mullite
mullite Min. (ˈmʌlaɪt) [f. Mull, the name of an island off the west coast of Scotland + -ite1.] A silicate of aluminium, approximately Al9Si3O20, that occurs as orthorhombic crystals, is formed naturally or artificially by the action of high temperatures on other aluminium silicates, and is used for... Oxford English Dictionary
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Tievebulliagh
Three small outcrops of porcellanite can be seen on the higher south-east slope. The "Malone Hoard", consisting of 19 polished stone axes from porcellanite Tievebulliagh or similar material from Brockley on Rathlin Island, was found wikipedia.org
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porcelain
porcelain (ˈpɔəsɪleɪn, ˈpɔəslən) Forms: α. (6 porcelana, 6–7 porcellana), 7– porcelain, (6–7 -cellan, -e, 6–9 -celaine, 7 -c'lane, 7–8 -celline, 8 -c'lain, 7–9 -celane; 6 (porseland) porslin, 7 porselan). β. 6–7 purcelan, 7 -ane, -ain, -aine, -ine, purcellan, pourcelain; 6–7 purslane, 6–8 -laine, 7 ... Oxford English Dictionary
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Beaghmore
Excavation of one of the cairns revealed a polished porcellanite axe, which may have originated from the Tievebulliagh axe factory, some 70 miles away wikipedia.org
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sanidine
sanidine Min. (ˈsænɪdiːn) [a. G. sanidin (K. W. Nose 1808), f. Gr. σανιδ-, σανίς board: see -ine5.] A glassy variety of orthoclase, found in flat crystals (Chester).1815 Aikin Man. Min. (ed. 2) 197 Glassy Felspar. Sanidin. 1849 J. Nicol Man. Min. 121 The glassy felspar or sanadine is by some conside... Oxford English Dictionary
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William James Knowles
At Tievebulliagh, near Cushendun he excavated the a neolithic axe factory which was the source of porcellanite axes found all over Ireland and Great Britain wikipedia.org
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Axe
where thousands of ground stone axes were roughed out, are known from many places, such as: Great Langdale, England (tuff) Rathlin Island, Ireland (porcellanite wikipedia.org
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Process for the preparation of amorphous silica - Google Patents
The invention provides a process for the production of a high grade amorphous silica having a purity of at least 90% active silica of the formula SiO 2 .nH 2 O, comprising the steps of: a. comminuting and wet classification of porcellanite rock to form granules having an average diameter of 200 microns to 8 mm; b. combining the resulting granules with NaOH at a temperature of up to 100° C. to ...
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Temblor Range
Rocks from the Monterey formation consist mostly of silicate shales and porcellanite (silica derived from fossil plankton in an intermediate to deep-water wikipedia.org
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拉斯林岛
考古学 海岸附近Cushendall旁的Tievebulliagh山，有一个新石器时代的 石斧作坊，在Bockgill Middle镇的有另一处作坊， 采用相同的porcellanite石头。 这两个斧头作坊厂的产品几乎没有差别，都在爱尔兰进行交易。这里是爱尔兰最重要的作坊。 wikipedia.org
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Victoria Hotel, Darwin
The two-storey hotel was made of local, multi-coloured porcellanite stone, with a facade dominated by a parapetted gable and verandahs. wikipedia.org
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Rathlin Island
A Neolithic stone axe factory featuring porcellanite stone is to be found in Brockley, a cluster of houses within the townland of Ballygill Middle. wikipedia.org
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