"Limonite" is a word in ENGLISH
Hydrous sesquioxide of iron, an important ore of iron,
occurring in stalactitic, mammillary, or earthy forms, of a dark brown
color, and yellowish brown powder. It includes bog iron. Also called
brown hematite.
As to rocket ships flying between America and Europe, I believe it is worth seriously trying for. Thirty years ago persons who were developing flying were laughed at as mad, and that scorn hindered aviation. Now we heap similar ridicule upon stratoplane or rocket ships for trans-Atlantic flights. (1933)[Predicting high-altitude jet aircraft for routine long-distance travel.]
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A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally …
Read the complete definitionA borosilicate of alumina, iron, and lime, commonly found in glassy, brown crystals with acute edges.
Read the complete definitionA mineral, called also sphalerite, and by miners mock lead, false galena, and black-jack. It is a zinc sulphide, but …
Read the complete definitionPolishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also …
Read the complete definitionA mineral occuring in silky fibers of a lavender blue color. It is related to hornblende and is essentially a …
Read the complete definitionLimestone containing a large percentage of iron carbonate, and hence turning brown on exposure.
Read the complete definitionA hydrous oxide of iron, occurring in prismatic crystals, also massive, with a fibrous, reniform, or stalactitic structure. The color …
Read the complete definitionAn important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in …
Read the complete definitionThe common black, or dark green or brown, variety of amphibole. (See Amphibole.) It belongs to the aluminous division of …
Read the complete definitionA mineral of a transparent vitreous brown color, found in the ejected masses of Vesuvius. It is a silicate of …
Read the complete definitionThe most common and most useful metallic element, being of almost universal occurrence, usually in the form of an oxide …
Read the complete definitionA mineral of a gray, red, brown, or green color, and glistening luster. It is a silicate of iron and …
Read the complete definitionA partly reduced copper sulphide, obtained by alternately roasting and melting copper ore in separating the metal from associated iron …
Read the complete definitionAn earthy-looking ore, consisting of brown oxide of iron with minute particles of native silver.
Read the complete definitionpúl n pool, k. o. pocket billiards played with a cue ball and object balls numbered from 1 to 15. …
Read the complete definitionManganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its …
Read the complete definitionA mineral, usually of a pale brown or of a gray or grayish green color, consisting chiefly of the hydrous …
Read the complete definitionCarbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is …
Read the complete definitionClay that is colored red or brown by the oxides of iron or manganese, and used as a pigment. It …
Read the complete definitionA mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, brown, and black, the red …
Read the complete definition