LINNJEITE. 



Analysis, by Hermann 

 Silica , 

 Alumina 

 Peroxide of iron 

 Protoxide of iron 

 Magnesia 

 Potash . 

 Soda . 

 Water 



42-22 

 27-55 

 6-98 

 2-00 

 8-85 

 3-00 

 2-53 

 7-00 



98-13 

 Locality. Orijerfvi, in Finland, associated 

 with Copper Pyrites, 



LiNN.EiTE, Haidinger. Cubical : occurs 

 in regular octahedrons and cubo-octahe- 

 drons. Cleavage pai-allel to the faces of the 

 cube, imperfect. Also massive and botryoidal. 

 Colour steel-grey, tarnishing copper-red. 

 Lustre metallic. Streak blackish-grey. 

 Brittle. Fracture uneven, or sub-conchoi- 

 dah H. 5-5. S.G. 4-8 to 5. 



Comp. Co S + Co2 SS = sulphur 42, cobalt 

 58=100. Sometimes the cobalt is partly 

 replaced by nickel or copper. 



Analysis, from Riddarhyttan, by Hisinger : 

 Sulphur .... 38-50 



Cobalt 43-20 



Copper 14-40 



Iron . . . . . 3-53 

 Matrix . . . .0-33 



99-96 



BB gives off sulphurous odours, and fuses 

 in the inner flame to a grey magnetic bead, 

 of a bronze-yellow colour inside ; after roast- 

 ing, it imparts a blue colour to borax and 

 microcosmic salt. 



Dissolves in nitric acid, with separation 

 of sulphur. 



Localities. Bastnaes, near Riddarhyttan, 

 in Sweden, in gneiss, with Copper Pyrites 

 and Hornblende. Miisen, near Siegen, in 

 Prussia, with Barytes and Spathic Iron. 

 Mine la Motte, Missouri, U. S. 



For varieties see Carrollite and Siege- 



NITE. 



LiNSENERZ, Werner ; Linsenkupfek, 

 Hausmann. See Liroconitb. 



LiPARiTE, Glocker. See Fluor. 



Liroconitb, Beudant. Rhombic. Occurs 

 in obtuse rectangular pyramids. Cleavage 

 imperfect, parallel to the planes of a flat octa- 

 hedron. Colour sky-blue to verdigris-green. 

 Lustre vitreous, inclining to resinous. Trans- 

 lucent. Streak paler than the colour. Sec- 

 tile. Fracture imperfect-conchoidal, uneven, 

 H. 2 to 2-5. S.G. 2-88 to 2-98. 



LITHOMARGA. 221 



Comp. Hydrated arseniate of copper, 



5Cu5 As + AlPi-24H. 



Fig. 268. 



Analysis, from Cornwall, by Hermann : 

 Oxide of copper . . . 36*38 

 Alumina . . . .10-85 

 Peroxide of iron . , . 0-98 

 Arsenic acid . . . 23-05 

 Phosphoric acid . . . 3 73 

 Water 25-01 



100-00 



BB in the forceps colours the flame bluish- 

 green. On charcoal fuses imperfectly, and 

 with slight intumescence, forming a brownish 

 slag, which contains white granules of me- 

 tal. With carbonate of soda yields a semi- 

 malleable globule of copper containing 

 arsenic. 



Soluble in nitric acid. 



Localities. — English. Huel Muttrell, Huel 

 Gorland, and Huel Unity, in Cornwall, 

 generally in attached crystals associated 

 with other arseniates of copper. — Foreign. 

 Herrengrund, in Hungary, in minute crys- 

 tals. Voigtland. 



Name. From >i£'g«?, pale, and xoua,, dust, 

 in allusion to the paleness of the streak. 



Brit, Mus., Case 56. 



M. P. G. Principal Floor, Wall -case 2 

 (British). 



Litheospore. See Barytes. 



LiTHiA IMiCA ; Lithiokglimmer, Nau- 

 mann. Lithionit, v. Kobell. LlXHiOK 

 Mica. See Lepidolite. 



LiTHOaiARGA, Kirwan ; LiTHOMAEGE, 

 Jameson. A form of Kaolin or China-clay. 

 Amorphous. Colour generally wliite, yel- 

 lowish or reddish, also grey or bluish, fre- 

 quently spotted internally. Opaque. Dull. 

 Adheres strongly to the tongue. Feels 

 greasy. Very soft, and yields to the nail. 

 Streak shining. Texture earth-y^. Fracture 

 large-conchoidal. H. 2 to 2-5. " S.G. 2 5. 

 Analysis, from Buchberge, by Zellner : 



Silica 49-2 



Alumina , . . . 36-2 

 Peroxide of iron . . .0-5 

 Water 14-0 



99-9 

 BB infusible; hardens on exposure to 

 a high temperature. Sometimes becomes 

 phosphorescent when heated. 



