COLLECTIONS IN ECONOMIC OEOLOCY AND METALLIJK(;Y. 189 



(ID) Metallic tin, aiiu'ltoil from tln> San .Tiiciiito ohh. i lt;09«». ) 



(20) Casaitorito. with a little <|uart/., hIiowih;; full widtli of vi'iii. ('anh Miue, 

 RockbriiiKe County, Virf,'iiiia. (IJOll-'l.) 



(21) C'jWHiterit*'. in ciiiartz. Martha 1). ('a«h Mine, Nn. 'J, I{i)ckbridno Connty, Vir- 

 ginia. (4:{l»y7. ) 



{'22) Quartz ganjjno. Martha 1 ». Casli Mine-, No. "J, KofkhridRe Connty, V'ir>;iuia. 

 (430tn».) 



(2:5) Cassiterito, crystallized in ^jneiss. Martiia I). Casli Mine, No. 1, Korkhridgo 

 Connty, Virjjinia. (i:UnH.) 



(24) Metallic tin, smelted from the urea of the t'aah Minoa. (55405.) 



(2r>) Ca.Haiterite, rotif^h crystals and water-worn fraguicntH, stream tin. King's 

 Mountain, Cleveland County, North Carolina. (T)???.'). ) 



(2t>) Cassiterite, roui^h crystals and water-worn fragments, stream fin. King'a 

 Mountain, Cleveland County, North Carolina. (51217.) 



(27) Cassiterite, water-worn fraginout.s, stream tin. liroad Arrow .Mine. .Vshl.ind 

 district. Clay Connty, Alabama. (3416.-^.) 



(28). Stanniferous hematite. Broad Arrow Mine, Ashland district, Cl.»y County. 

 Alabama. (:{416i).) 



(21)) (Jneiss rock, carrying disseminated cassiterite, contains abcmt 2 jter cent, of 

 tin. Broad .Vrrow Mine, Ashland district, Clay County, Alabama. (:{4172.) 



(30) Metallic tin, smelted from the Broad Arrow ores. (34173.) 



A X T I M O X Y. 



Antimony Mineral and Ore. 



stibnite. 



Composition: SK.S:,. Sulphide of antiinoiiy, contaiiiuij; aiitirnoiiy 

 71. S per cent, and .siilpluir liS.L* {wv cent. 



It crystallizes in tlie oitboionibic system, crystals bein^ l()nf!;-l)ladcd 

 and complex. It jjenerally occurs columnar massive. Its hardness is 

 2 and its specific gravity is 4.5 ; it has a lead-gray color and full 

 metallic luster; it can be cut into shavings with a knife. 



Stibnite is the universal antimony ore, and is iliustratcd by .seven 

 si)ecimen8 : 



(1) Crystallized ami massive, with a little ipiartz. .San Benito Connty, California. 

 (5640!^.) 



(2) Ma.ssive, fibriuis. with quartz. .Summit Mine. San Emij^dio mining: ili^irn t. 

 Kern County. Calitornia. (34294.) 



(3) Massive, libn.us. Humboldt County, Nevatla. (.')l)4Gl».) 



(4) Massive, fibrous, a little decomposed. American Antimony .Mine, I'tah. 

 (55;W)'J. ) 



(5) FibroiLs, separated. American .\ntimony Mine, rtali. (.V>370. ) 



(6) Metallic antimony, from tlie American miue ores. (.'i.'i373, ) 



(7) Massive, librous, with quartz and calcite. Silver Hill, Sevier County, Arkansjis, 

 (5<J4(>2. ) 



