Show eleven uranium ores are named others known there are at least eleven known uranium ores in production now and geologists and others having a direct interest in mining materials know of 0 many others bot not yet named the presently named ores are pitchblende euxenite earno tite nUe and meta auti au nite and in addition a new black uranium bearing mineral of commercial value has been found on the colorado plateau in association with other ores the ore has not yet been named and Is considered ct to be a compound of uranium silicate te the first of this grouping urani site is a black mineral containing uranium oxide and is sometimes found with pitchblende and is often mistaken for it because of its almost identical physical character pitchblende a variety of is perhaps the most interesting te Oe of all ores it was from pitchblende that radioactive radiations were discovered and from it the curies auries obtained pure radium is bound found in the crystalline form mi in as is uran hilte ft it is greenish brown to brown and sometimes black in color and has a waxen to sub metallic luster when in the ore Is ground or chipped into thin fragments the fragments become translucent so far has not been found in sufficiently large quantities to be commercially valuable euxenite Is a rather unusual ore and as many as fifteen or more other othor metals are found combined with ft it it usually is found in the crystalline form in granite and is usually black in color and sometimes has a greenish to brownish tint is found to in crystalline form in granite and often is associated with other rare earth minerals such as columbium tantalum and others is similar to ferge onite with much the same characteristics teri te s bics tics positive identification is usually possible only in the laboratory most common type of uranium ore found on the colorado plateau is derived from or pitchblende due to the effect of aging weathering chemical decomposition or water deposition it itt is one of the vanadium ores and was once mined solely for the vanadium content it bears a distinctive tive canary yellow color and has a soft beatly luster Is most frequently found in sandstone formations in irregularly shaped deposits occasionally it may be distributed evenly in sandstone and then the color may not be discernible similar to Is i commonly found with the latter and is often confused with it bears the same coloring as but Is Ls more commonly greenish yellow due to exposure or the presence of some copper ores and meta are practically the same and are differentiated only in the laboratory they are found as thin small crystals in with and other ores formed from oxidized or pitchblende Is often associated with tor benite and is likewise found as thin crystals is formed from the oxidation and hydration of and is most commonly found with |