214 



LEONINE. 



Lime 

 Water . 



9-25 

 11-64 



10000 



BB swells up and fuses with intumescence 

 to a white enamel. Forms a transparent 

 glass with borax. 



Dissolves readily in muriatic acid. 



Localities. Schemnitz in Hungary, in a 

 trachytic rock. Copper Falls, Lake Superior, 

 U.S. : this variety does not become changed 

 by exposure. 



Name. After Professor von Leonhard of 

 Heidelberg. 



Brit. Mus., Case 28. 



Leonine (from leoninus, from leo, a lion). 

 A brown kind of Agate, with spots like those 

 of a panther, or with waved markings of a 

 deeper tint than the ground. 



Leopard Stone. A variety of compact 

 Felspar, spotted Avith oxide of iron and man- 

 ganese, from Charlotte, North Carolina, 

 U.S. 



Lepidochlore. The name proposed by 

 Prof. C. U. Shepard for an impure Chlorite 

 from Mount Pisgah. 



Lepidokrokite, Ullman. A variety of 

 Gothite occurring in minute radiating crys- 

 tals, or granular scales and feathery ag- 

 gregations, imbedded in fibrous Red Oxide 

 of Iron, in Quartz and in nodules of Chal- 

 cedony. 



Analysis, from the Hollerterzug, by 

 V. Kobell : 



Peroxide of iron . , . 85'65 

 Peroxide of manganese . 2'50 

 Silica ..... 0-35 

 Lime ..... trace 

 Water .... 11-38 



LEPIDOMELANE. 

 into pearl-grey and yellowish-grey. Lustre 

 silvery or pearly. Easily split into thin 

 laminae, which are flexible and highly 

 elastic. Frequently silver-white by re- 

 flected light, rose-red by transmitted light. 

 Biaxial. H. 2 to 3. S.G. 2-8 to 3. 



Coinp. 2Li, Si + 3 Al Si + (KF, Si F^ ). 



Analysis, of grey variety, from Cornwall, 

 by Turner : 



Silica 50-82 



Alumina .... 21-33 

 Protoxide of iron . . . 9*08 

 Protoxide of manganese . trace 



Potash 9 86 



Lithia 4-05 



Hydrofluoric acid . . 4 81 



9995 



99-88 



In a specimen from Hamm, Breithaupt 

 found 14-32 per cent, of water, and in one 

 from Baden 13-49 per cent. 



Localities. Oberkirchen ; Hollerterzug 

 in the Westerwald. Spring Mills, Mont- 

 gomery CO., Pennsylvania, U.S. 



Name. From Xivk, a scale, and x^oxiu;, of 

 a saffron or yellow colour. 



Brit. Mus., Case 16. 



Lepidolite, Phillips. Lepidolith, Haus- 

 niann, Werner. Lithia Mica. Rhombic. 

 Frequently occurs in oblique rh(mibic, and 

 hexagonal prisms ; also in coarsely granular 

 masses composed of an assemblage of small 

 flexible scales, which are translucent and 

 sometimes hexagonal. Colour peach-blos- 

 som red, verging on lilac -blue, and passing 



BB when heated gives ofl" water and 

 hydrofluoric acid. Fuses very readily, 

 swelling up and forming a glass which is, 

 for the most part, transparent and colour- 

 less, but brown or black if it contain a lai'ger 

 quantity of iron. Colours the flame red, 

 especially on the addition of bisulphate of 

 potash. Imperfectly decomposed by acids 

 in its natural state ; but after ignition, com- 

 pletely. 



Localities. — English. St. Michael's Mount, 

 Cornwall, in silvery hexagonal plates. — 

 Scotch. East side of Loch Leven, in lime- 

 stone Irish. Termonmaquirk, Tyrone. — 



Foreign. Mount Hradisko, near Rozena in 

 Moravia, in granite with Rubellite. Isle of 

 Uton in Sweden, with Petalite. Altenberg 

 in Saxony. Zinnwald in Bohemia. Inscha- 

 kowa, Mursinsk, &c., in the Ural. Ches- 

 terfield, Massachusetts ; Paris, Maine ; near 

 Middletown, Connecticut, U.S. 



Name. From Xi^/^iov, a small scale, and 

 Xi'do;, stone. 



Brit. Mus., Cases 32 and 58a. 



3I.P.G. Horse-shoe Case, Nos. 1002, 

 1003. 



Lithia is used in pyrotechny to produce a 

 beautiful carmine colour. 



Lepidomelane, Soltmann. A variety of 

 Uniaxial Mica, occurring in small six-sided 

 tables, or an aggregation of minute opaque, 

 micaceous, crystalline scales, united in gra- 

 nulo-laminar masses. Basal cleavage per- 

 fect. Opaque and raven-black, or translu- 

 cent and leek-green. Lustre adamantine, 

 inclining to vitreous. Streak mountain- 

 green. Rather brittle. H. 3. S.G. 3. 



Comp. 4K, si + 7Fe Si + 7Fe Si + 4A1 Si. 



