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(specular haematite)

См. также в других словарях:

  • specular iron — noun or specular iron ore : hematite with a metallic luster called also specularite * * * specular iron noun A brilliant steely crystallized haematite • • • Main Entry: ↑specular * * * specular iron, hematite, especially …   Useful english dictionary

  • specular — adj. 1 of or having the nature of a speculum. 2 reflecting. Phrases and idioms: specular iron ore lustrous haematite. Etymology: L specularis (as SPECULUM) …   Useful english dictionary

  • Ngwenya Mine — The Ngwenya Mine is located on Bomvu Ridge, northwest of Mbabane and near the north western border of Swaziland. This mine is considered to be the world s oldest. The haematite ore deposit was used in the Middle Stone Age to extract red ochre,… …   Wikipedia

  • Dartmoor tin-mining — The wheelpit at Huntingdon mine The Dartmoor tin mining industry is thought to have originated in pre Roman times,[1] and continued right through to the 20th century. From the 12th century onwards tin mining was regulated by a Stannary Parliament …   Wikipedia

  • hematite — hematitic /hee meuh tit ik, hem euh /, adj. /hee meuh tuyt , hem euh /, n. a very common mineral, iron oxide, Fe2O3, occurring in steel gray to black crystals and in red earthy masses: the principal ore of iron. [1535 45; < L haematites… …   Universalium

  • Hematite — For other uses, see Hematite (disambiguation). Hematite Hematite (blood ore) from Michigan (unknown scale) General Category …   Wikipedia

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