carbonate+of+iron
31loess — loessial, loessal, adj. /loh es, les, lus/, n. a loamy deposit formed by wind, usually yellowish and calcareous, common in the Mississippi Valley and in Europe and Asia. [1825 35; < G Löss < Swiss G lösch loose, slack (sch taken as a dial.… …
32Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… …
33Magnesite — General Category Carbonate mineral Chemical formula MgCO3 …
34Pyrometallurgy — is a branch of extractive metallurgy. It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals.… …
35Robert Forester Mushet — (1811 – 1891), an English metallurgist, was born April 8, 1811, in Coleford, Gloucestershire. He was the youngest son of Agnes Wilson and David Mushet, an ironmaster. [ [http://ia300029.us.archive.org/1/items/dictionaryofnati39stepuoft/dictionaryo… …
36Aberdeen — ABERDEEN, a city, and sea port town, the seat of a university, the capital of the county of Aberdeen, and the metropolis of the North of Scotland, 109 miles (N. N. E.) from Edinburgh, and 425 (N. by W.) from London; containing, with parts of… …
37rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …
38Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …
39Siderite — Sid er*ite, n. [L. sideritis loadstone, Gr. ????, ????, of iron, from ???? iron.] 1. (Min.) (a) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish… …
40bole — Clay Clay (kl[=a]), n. [AS. cl[=ae]g; akin to LG. klei, D. klei, and perh. to AS. cl[=a]m clay, L. glus, gluten glue, Gr. gloio s glutinous substance, E. glue. Cf. {Clog}.] 1. A soft earth, which is plastic, or may be molded with the hands,… …
