28 o 
METALS. 86. Stannum. 
ShininfT, opake, milk-white, with a yellowifli-white 
ftreak. 
Gerhard Grand . muter al. p. 250. 
Native tin fpar. ‘ichmeifser miner. 2, p. i i;q. 
Found near (lieren in Siie/in, and in Conmuall^ of a comnioa 
form, or in pyramids or oflohedrons : texture frequently It' 
brous or lamellar : when fufed with borax it producesa miHt' 
white glafs ; fpecific gravity 6,007. 
Whitifh or brown, lamellar, diaphanous, tranfparent or 
femitranfparent. 
Stannum fpatofum. SjtJ}. nat. xii. 3. / 131. » 4. 
Stannum minera fpathiforme- ^ Wall, fyd, 2. p. 322. n. J. 
Brown tin-ftone. ?>chmetfser mineral, z. p, 160 
Found in Cornnuall, Bohemia, and ^axonf, and is often con- 
founded with tungften: it diflblves in acids and melts with 
confiderable difficulty, and is fometimes fo hard as to ftrike 
fire with Heel : its furface can be feraped with a knife: it i* 
found in malTes and fometimes cryftailized in double 4-fided 
pyramids: colour whitidi, various (hades of brown with often 
a mixture of red : fpecific gravity 6,900. it contains from 70 
to 80 percent of tin. 
ligneutii. Pale wood-colour marked with alternate paler ftria;, fibrous 
in a llellatc manner, flriking fire with Heel, feparat- 
ing into layers, breaking into wedge-form fragments^ 
Brunnich Acl. ^tockh 39. 1778. p. 3 20. 
Holzzin^ Klaproth fch. Berl. nat, 7. p. 169. 180. 
Wood tin ore. Kirovan miner. 2. p, 198. 
Stream tin. ^chmeifter mineral. 2..p. 161. 
Wood tin. Thomfon them. 4. p. 69. 
Found in Cornouall, in fmall rounded pieces with the furface 
commonly rough, or in indeterminate fragments ; colour 
light brown with ffiades of a lighter colour, having the ap- 
pearance of a piece of knotted wood : texture finely fibrous, 
with the fibres generally diverging on one fide: it is opake, 
hard, dilTolving (lowly in acids, and melting with great dif- 
ficulty, decrepitating when red hot : fpecific gravity from 
5,800. to 7,000. it contains about 63 per cent of tin. 
amtrpJoum. CompatSl, opake, of a common form and dulky colour^ 
with a light grey ftreak. 
Stannum amoiphum. Sjft- nat. xii. 3./. 130. ». 3, 
Stann. aifenico et ferro. Wall.fyft. 2. p. 321. n, 4. 
Common t n (lone. Kit^an miner. 2 p. 197. 
Brown tin Hone. %chmeifser miner. 2, p. 260, 
Tinllone. ‘Ihom/on, chem, 4. p, 68. 
mineralisa- 
tum. 
spatosum. 
