158 MONTANA: INDUSTRIAL KESOURCES 



ZINC 



Uses — More tliiiii half the (loincsiic ((Utiml wsvtl in .unlvaiiiziiiy ii-oii aud 

 making brass. AIioul one-Fourth used as zinc oxide in paints. 



Occiirrciice — Has In-eu euumiereially produced in Cascade, Deer Lodge, Jeffer- 

 son, Granite, Lewis and Clark, Lincoln, JIadison. ^Mineral, Ravalli, and Silver 

 Bow comities. One-fifth of the nation's sui)i)ly of zinc conies from Silver Bow, 

 accordint;' to the U. S. (J. S. and tlie iiroduction in Hint count.v has ,niven ^Montana 

 third ranic in zinc. 



MINERALS NON-METALLIC 



ALABASTER 



Uses — A fine-srained variet.v <if .uypsuni occurrint;- in the massive form. For 

 small statues and other ornamental designs. 



Ofcurroiice — L:irue deposits reported li.v Roue in tiie Little Snowy mountains 

 in Fergus and Golden Valley counties. 



ARSKNIC 



Uses — ]N[etallic arsenic constituent of hard lead, used in shot and liearing 

 metals. In oxide form called white arsenic in making glass, which consumes half 

 the d(miestic output, and in insecticides. In other forms, constituents of sheep 

 and cattle dips, and also used in dyeing textiles, in tanning, in medicine, and 

 during World War in prei)aring poison gas. 



Ocourrenoe — R(>covered as a by-product of the Rutt(> ores in the reduction works 

 at Anaconda. Also recovered as a by-product of gold ores in the Jardlne mining 

 district of Park count.v. Nearly all the world's supply is recovered as a by-prod- 

 uct of smelting. The claim is made that Montana is (192;j) producing 4.") per 

 cent of the arsenic output in the United States. 



ASBESTOS 



Uses — P'ireproof cloth for firemen's suits, tlu'ater curtains, steam packing 

 and other forms of heat insulation and non-conducting coverings ; low-grade ma- 

 terial constituent of various building products; in electrical industry where l>oth 

 insulation and resistance to high temperatures are required. 



Occurrence — Reported in Gallatin count.v, 16 miles northwest of West Yel- 

 lowstone, and also in Madison county, in Madison range east of Ennis. 



BARITE 



Uses — In pigments, as sizing for papers and textile fabrics, in manufacture of 

 rubber, asbestos, cement and in tanning. Compounded with zinc sulphide used as 

 pigment in white enamel paints, and in manufacture of linoleum and oilcloth. 



Occurrence — Reported by Rowe on Paltee Creek, two miles southwest of 

 Missoula, Missoula county; in Ruby Mountains. Madison county; on Cabin Creek. 

 25 miles southeast of Ekalaka, Carter county ; on Cedar Creek. 2o miles from its 

 mouth, in Wibaux county. Missoula deposit described as one of the best and 

 purest in northwest and of commercial importance. ALso reported near Stanford, 

 .Tuditli Basin county. 



BENTOMTE 



Uses — Sizing for paper, absorbent in dynamite manufacture, retarder for 

 gypsum plasters, constituent of a remedial dressing (antiphlogistine), adulterant 

 in candies and drugs, de-inking of wood-pulp papers. 



Occurrence — Reported six miles northwest of Hysham. Treasure comity, in 

 deposit five miles hmg and up to a mile wide, 10 to .'>() feet in thickness. 



BUILDING STONES 



Uses — With a growing population and a rapidly decreasing timber supply, 

 there must come an increasing use of stone and artificial building materials for 



