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The wine gallon, which some sources relate to the volume occupied by eight medieval merchant pounds of wine, was at one time defined as the volume of a cylinder 6 inches deep and 7 inches in diameter, i.e. 6 in × (3 + 1 / 2 in) 2 × π ≈ 230.907 06 cubic inches.
Heulandite-Ca, the most common of these, is a hydrous calcium and aluminium silicate, (Ca,Na) 2−3 Al 3 (Al,Si) 2 Si 13 O 36 ·12H 2 O. Small amounts of sodium and potassium are usually present replacing part of the calcium. Strontium replaces calcium in the heulandite-Sr variety. The appropriate species name depends on the dominant element.
The Ministry of Energy and Mineral Resources of the Republic of Indonesia (Indonesian: Kementerian Energi dan Sumber Daya Mineral Republik Indonesia, abbr. Kementerian ESDM) is an Indonesian ministry responsible for providing assistance to the President and Vice President in performing government's affairs in the field of energy and mineral resources. [1]
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2 cu 3 (co 3) 2 (oh) 2 + h 2 o → 3 cu 2 (co 3)(oh) 2 + co 2 From the above equation, the conversion of azurite into malachite is attributable to the low partial pressure of carbon dioxide in air. Azurite is quite stable under ordinary storage conditions, so that specimens retain their deep blue color for long periods of time.
PARAMARIBO (Reuters) -Suriname's fugitive former President Desi Bouterse has died aged 79, the country's government said on Wednesday, almost a year after he fled authorities to avoid jail ...
Trona (trisodium hydrogendicarbonate dihydrate, also sodium sesquicarbonate dihydrate, Na 2 CO 3 ·NaHCO 3 ·2H 2 O) is a non-marine evaporite mineral. [4] [6] It is mined as the primary source of sodium carbonate in the United States, where it has replaced the Solvay process used in most of the rest of the world for sodium carbonate production.