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Rate | Answer | Clue |
QUARTZ | Silica-based mineral | |
SILICIFEROUS | Producing silica; united with silica. | |
SILICICALCAREOUS | Consisting of silica and calcareous matter. | |
ACIDIC | Containing a high percentage of silica; -- opposed to basic. | |
SILICIFY | To become converted into silica, or to be impregnated with silica. | |
SILICATED | Combined or impregnated with silicon or silica; as, silicated hydrogen; silicated rocks. | |
SILICEOUS | Of or pertaining to silica; containing silica, or partaking of its nature. | |
SILICIFIED | Combined or impregnated with silicon or silica, especially the latter; as, silicified wood. | |
BASIC | Said of crystalline rocks which contain a relatively low percentage of silica, as basalt. | |
SILICIC | Pertaining to, derived from, or resembling, silica; specifically, designating compounds of silicon; as, silicic acid. | |
OPAL | A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity. | |
FRETT | A vitreous compound, used by potters in glazing, consisting of lime, silica, borax, lead, and soda. | |
SILEX | Silica, SiO2 as found in nature, constituting quarz, and most sands and sandstones. See Silica, and Silicic. | |
MARGARITE | A mineral related to the micas, but low in silica and yielding brittle folia with pearly luster. | |
TRIDYMITE | Pure silica, like quartz, but crystallizing in hexagonal tables. It is found in trachyte and similar rocks. | |
DOGGER | A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron. | |
HELVITE | A mineral of a yellowish color, consisting chiefly of silica, glucina, manganese, and iron, with a little sulphur. | |
ALBOLITH | A kind of plastic cement, or artificial stone, consisting chiefly of magnesia and silica; -- called also albolite. | |
HEMATINON | A red consisting of silica, borax, and soda, fused with oxide of copper and iron, and used in enamels, mosaics, etc. | |
GEYSERITE | A loose hydrated form of silica, a variety of opal, deposited in concretionary cauliflowerlike masses, around some hot springs and geysers. | |
CANCRINITE | A mineral occurring in hexagonal crystals, also massive, generally of a yellow color, containing silica, alumina, lime, soda, and carbon dioxide. | |
KEILHAU-ITE | A mineral of a brownish black color, related to titanite in form. It consists chiefly of silica, titanium dioxide, lime, and yttria. | |
SPEISS | A regulus consisting essentially of nickel, obtained as a residue in fusing cobalt and nickel ores with silica and sodium carbonate to make smalt. | |
SILICIFICATION | Thae act or process of combining or impregnating with silicon or silica; the state of being so combined or impregnated; as, the silicification of wood. | |
WOOTZ | A species of steel imported from the East Indies, valued for making edge tools; Indian steel. It has in combination a minute portion of alumina and silica. |