Show SORTED AND SAMPLED X A X V in the operation of cyanide mills cocoa nut matting in layers can be placed in the head box to prevent earthy slimes from entering the zinc precipitating boxes placed at the end of the last zinc compartment the matting will catch particles of precipitates which may be suspended in the solution in the relocation of an abandoned and claim or mine the in applying for patent cannot benefit by the improvements made or work performed by the previous owner of the property in other words he must proceed the same as if the property in question had not been made subject to a prior location and he must comply with the requirements of the law in every particular the three pigments ocher umber and sienna are all obtained from iron ores clays and other earths containing a considerable percentage of iron oxide although there are large deposits for these materials throughout the united states that could be used for the manufacture of these pigments still many of them an account of lack of transportation facilities are at the present time of little or no commercial value all of the lithium silicate that is produced in the united states for commercial purposes is obtained from froin san diego county california principally from the vicinity of pala there are two other localities in this county where has been found in some considerable quantity one being near banner and the other seven miles east of julian no was mined in either of these localities during 1904 and only the necessary assessment work was done in newfoundland district utah bismuth ore of high grade is reported to occur in association with copper ores bismuth occurs sparingly in the metallic state the principal ores are the sulphide the oxide and the basic carbonate and they are scattered widely throughout the rocky mountain states it is reported that near soda ville esmeralda county nevada a vein has been opened for feet which is from twenty inches to four feet in width and which carries ore that averages 14 per cent bismuth monazite is essentially an anhydrous phosphate of the rare earths cerium lanthanum and didymium but usually contains a small and varying percentage of thoria it varies considerably in color being light yellow to honey yellow reddish brownish and yellow yellowish ish gre green en and it has a resinous to viperous vit erous luster it is brittle breaking with a dond hoidal to uneven fracture and is from 5 to 55 in hardness the mineral Is heavy having a specific gravity of to 53 by means of its color and specific gravity it can usually be readily identified monazite zircon and are mined for similar purposes that is for use in the manufacture of electric and incandescent lamps the characteristics of fullers earth are its variegated color greenish white gray brown olive or olive green soft texture and greasy feel in appearance it resembles clay and when placed in water will fall into powder but does not become plastic the composition of fullers earth varies greatly chemical analyses of the commercial grades showing a content of 50 to 63 per cent silica about 10 per cent from 10 to 15 per cent water and a I 1 fluctuating percentage of iron calcium magnesium and other impurities diff different er localities will produce mineral of varying composition and not infrequently analyses made in the same vicinity will show a wide range in the percentage of silica and moisture to decide what quality of fullers earth is better adapted to a certain industrial use it is necessary to submit in it to actual trial in which case the chemical 1 analysis will be of some service antimony is a white very brittle metal of laminated or crystalline texture it fuses at a low temperature and readily va po it is not used in the pure state but it forms several valuable alloys alibis and compounds the most important alloys of antimony are type metal britannia pewter and antifriction anti friction metals type metal consists essentially of lead and antimony often with the addition of small quantities of nickel or copper britannia is a white metal alloy of antimony with tin copper and bismuth and is used largely for tableware there are several antifriction anti friction alloys which usually go under the name of babbitt metal one of these consist of fifty parts of tin to five of antimony and one of bismuth but other proportions are in use the addition of antimony to lead hardens it and the addition of a small quantity of bismuth gives the alloy the property of expanding pandi ngat at the moment of solidification from a molten state thus producing a perfect cast from a mould is a hydrous silicate of a clay that possesses extraordinary physical properties its resemblance to ehrenberg ite of germany had been noted by the late prof W C knight of the wyoming state school of mines has been used in various ways chiefly in the manufacture of some of the higher grades of soap the clay gives to the soap a certain weight and body which is considered desirable it has also been found valuable as a packing for a special kind of horseshoe and as a for certain powerful drugs sold in powdered form small quantities are used as an adulterant in making candy after the alkali associated with it has been removed in this condition it closely resembles terra alba which is generally used owing to its high absorption its use in the manufacture of dynamite has been suggested other uses have also been proposed such as for loading paper and for adulterations adulte rations of various kinds has a selling value of about 25 a ton |