340 SCOLERITE. 



the Isle of Mull. Talisker, in Skye. — Foreign. 

 Burufiord, in Iceland. Greenland. The Faroe 

 Islands. The Tyrol. Yindhyah mountains, in 

 Central India. 



Name. From iryJjXTiS, a worm, in reference 

 to its behaviour before the blowpipe. 



Brit. Mus., Case 27. 



For varieties of Scolezite, see Antkimo- 



LITE, POONAHLITE, &C, 



ScoLERiTE, Dufrenoy. See Scorilite. 

 ScoLEXEROSE, Beudant, or Anhydrous 

 Scolezite A Lnne Labradorite, from Pargas 

 in Finland. It has been referred to Scapo- 

 lite. 



Analysis^ by Nordenskiold : 



Silica ..... 54-13 

 Alumina .... 29'23 

 Lime ..... 15-45 

 Water . , . . . 1-07 



99-88 



ScoRiiJTE, Thomson. Occurs in reddish- 

 brown masses, full of cavities, like a scoria. 

 Easily reduced to powder. Colour of pow- 

 der white. S.G. 1-71. 



Locality. Mexico. 



Name. From scoria, cinder, and aA?, 

 stone. 



SCORODITE, BreithaupU Bufrenoy, Phil- 

 lips. Rhombic : primary form a right rhom- 

 bic prism. Generally occurs in druses or 

 globular groups of small prismatic crystals, 

 terminated by four-sided pyramids. Colour 

 pale leek-green or liver-brown. Transparent 

 or translucent. Lustre vitreous. Streak 

 white or pale greenish-grey. Bather brittle. 

 Fracture uneven. H. 3-5 to 4. S.G. 3-1 to 

 3-3. 



Fig. 377. 



Comp. 2Fe As + 2Fe As + 12H (Berzelius), 



or Fe As + 4H (Boussingault) = peroxide of 

 iron 34-7, arsenic acid 49-8, water 15-5 = 100. 

 Analysis of bluish crystals, from Corn- 

 wall, by Damour : 



Ai'senic acid . . . 51-06 



Peroxide of iron . . . 32-74 

 Water ..... 15-68 



99-48 

 BB behaves like Cube-ore : on charcoal 

 fuses to a grey magnetic slag with metallic 

 luati-e, giving off arsenical fumes. 



SEL AMERE NATIF. 



Caustic potash takes up the arsenic acid, 

 and precipitates the peroxide of iron 

 Readily soluble in muriatic acid. 



Localities, — English. F''ormerly at Huel 

 Gorland, Huel Unity, and several other 

 mines near St. Day in Cornwall ; on Fer- 

 ruginous Quartz, and in pale bluish-green 

 radiating groups, lining the interior of 

 cavities. — Foreign. France : Vaulry ; Chan- 

 teloube, near Limoges. Schwartzenberg, in 

 Saxony (brown). Lolling, in Carinthia. 

 Schlackenwald and Schonfeld, in Bohemia, 

 in tin-ore. Antonio Pereira ; Minas Geraes ; 

 in Brazil. Loaysa, near Marmato, in Po- 

 payan. 



'Name. From o-yJ^odev, garlic, in allusion 

 to the smell of the arsenical fumes given off 

 before the blowpipe. 



Probably Scorodite is a result of the de- 

 composition of Mispickel or other ores con- 

 taining arsenic and iron, with which it is 

 frequently associated. See Neoctese. 



Brit. Mus., Case 56. 



ScoRZA, or Skorza. The name given 

 by the people of Transylvania to the gran- 

 ular Epidote, which occurs in the form of 

 sand near Muska, on the banks of the 

 river Aranyos. 



Scotch Pebble. Glandular concretions 

 of Agate, displaying two or more colours, 

 arranged in concentric laminae. They are 

 found abundantly in the amygdaloid of 

 Dunbar, and the hill of Kinnoul, near 

 Perth. See also Agate, Cairngorm, 

 Citrine. 



Scottish Marble. A name given in 

 Scotland to the Serpentine of Portsoy. 



ScouLBRiTE, Dana, Dufrenoy. A bluish- 

 grey kind of Pipestone, used by the North 

 American Indians for making tobacco- 

 pipes, and brought, by Dr. Scouler from a 

 locality which is unknown. 



ScouLERiTE, Thomson. A variety of 

 Thomsonite, but containing less alumina and 

 water, and as much as Qh per cent, of soda. 

 Occurs in small spherical' concretions, com- 

 posed of short fibres radiating from a centre, 

 which are externally brownish-white, and 

 reddish-brown internally, and pass into the 

 compact variety Chalilite (which see). 



Localities. — Irish. Portrush, Antrim co. 

 Downhill, and Magilligan, Londonderry. 



Name. After Dr. Scouler. 



Seeerz. See Limonite. 



Seesalz, Werner. See Rock Salt. 



Seifenstein, Werner. Soapstone. See 

 Saponite. 



Sel Admirable. See Glauber Salt. 



Sel Amere JSIatif, Brochant. See Ep- 



SOMITE. 



