SPAR. 



Analysis, from Poratsch, in Hungary, by 

 Hnuer : 



Copper . 



. 30-58 



Antimony 



. 25-48 



Sulphur 



. 24-37 



Quicksilver 



. 16-69 



Iron 



. . . . 1-46 



Silver . 



. 0-09 



Arsenic 



. trace 



98-58 

 Localities. Val di Castello and Angina, 

 in Tuscany. Iglo and Poratsch, in Hun- 

 gary. Schwatz, in the Tyrol. 



Spar. A term applied by Cornish miners 

 to Quartz. In many parts of England the 

 same name is used for Calc Spar, or crystal- 

 line carbonate of lime. 



Sparable Tin. The name given in Corn- 

 wall to small crystals of Cassiterite {jigs. 

 396, 397), from their fancied resemblance 

 to the particular kind of nail called a spar- 

 able. This variety is found in the mines 

 near Camborne, at Huel Harris, Huel Owles, 

 and elsewhere. 



Fig. 396. 



Fig. 397. 



M. P. G. Principal Floor, Wall-case 8, 

 No. 396. 



SpArgelstein, Werner. SpxVRGEL Stone, 

 Jameson. See Asparagus-stone. 



Sparkies. See Spear Pyrites. 



Sparry Iron, Allan. 



Sparry Iron-ore, Kir- 

 wan. 



Sparry Ironstone, 

 Jameson. 



Sp ATHEISEN STEIN, iSewsS, 



Werner. 



Spathiger Eisenstein, 

 Werner. 



Spathose Iron, Phillips. J 



Spartaite. The name given by Breit- 

 haupt to the Calcite occurring at Sparta, 

 in New Jersev, associated with Zincite. 

 S.G. 2-808 to 2-818. 



Spartalite, ^roo^e §- Mif'Z^er. See Zincite. 



Spath dTslande. See Iceland Spar. 



Spath en Tables, Haiiy. Tabular Spar. 

 See Wollastonite. 



Carbonate of 

 Iron, See 

 Chalybite. 



SPECULAR IRON. 358 



Spath Floor, ") q t? 

 Spath Fusible.) See Fluor. 



Spath Magnesien, Necker. See Breun- 

 nep.ite. 



Spath Perle, Rome de Lisle. See Brown 

 Spar. 



Spath Pesant. See Barytes. 



Spath Schisteux, Brochant. See Slate 

 Spar. 



Spear Pyrites. IMacled crystals of Mar- 

 casite, or White Iron Pyrites, presenting the 

 appearance of dodecahedrons with triangular 

 planes, but which are macles, consisting of 

 similar portions of tive crystals. 



Localities. Near Castleton, Derbyshire, 

 fig. 398 ; and in Ireland, at Kilkee, co. Clare. 

 Freiberg, in Saxon v. Schemnitz, in Hun- 

 gary. Bohemia ; Teplitz, Przibram, and in 

 the plastic clay of the Brown Coal forma- 

 tion, at Littmitz and Altsattel, where it is 

 used for making sulphur and sulphate of 

 iron. 



Brit. Mus., Case 6. 



Speckstein, Werner. See Steatite. 



Specular Iron, Phillips. The name ap- 

 plied to those varieties of Hematite which 

 possess a crystalline structure, and a high 

 metallic lustre. Occurs crystallized in many 

 forms (the primary being a slightly acute 

 rhombohedron) ; also lamellar. Colour dark 

 steel-gi-ey, often with a brilliant iridescent 

 tarnish. Opaque, but translucent in very 

 thin laminae, Avhich show a blood-red colour 

 by transmitted light. Streak cherry-red to 

 red dish -broAvn. Structure lamellar. Brittle. 

 Fracture uneven, passing into conchoidal. 

 Occasionallv feebly magnetic. H. b'b to 6-5. 

 S.G. 5-19 to 5-23. 



Fig. 399. 



Fig. 400. 



Comp. Sesquioxide of iron, or Fe=iron 

 69-23, oxygen 30-77 = 100. 



BB alone infusible, but in the inner flame 

 becomes black and magnetic; with borax 

 forms a green or yellow glass. 



Localities.— English. Cornwall : at Botal- 

 lack, fig. 399, implanted on crystals of 

 Quartz'; Carnyorth, near St. Just. Near 

 Ulverstone in Lancashire, fig. 400. — Scotch, 



A A 



