LHERZOLITE. 

 white, yellowish, reddish. Lustre vitreous. 

 Semi-transparent. Streak white. Brittle. 

 Fracture imperfect-conchoidal. H. 4. S.G. 

 2 to 2-16. 



LIEBENERITE. 



217 



Fig. 260. 



Comp. C Si + ^"l si +4H = silica 44-36, 

 alumina 24-68, lime 13-68, water 17-28 

 = 100. 



Analysis, from Iceland, by Damoiir : 



Silica . 



. 44-48 



Alumina 



. 23-77 



Lime . 



. 10-71 



Soda . 



. 1-38 



Potash 



. 1-63 



Water . . . 



. 17-41 



99-36 



BB on charcoal intumesces, and with 

 microcosmic salt yields a transparent globule, 

 which contains a skeleton of silica, and 

 becomes opaque on cooling. 



Soluble in acids when reduced to powder. 



Localities. — Scotch. Storr in Skye : Jig. 

 260. Hartfield Moss near Glasgow, of a flesh- 

 red colour. — Irish. In trap with Mesotype 

 at Little Deer Park, Glenarm, co. Antrim : 

 Jig. 261. — Foreign. Skagastrand in Iceland. 

 Dalsnypen in Faroe. Godhaven, Disco 

 Island, Greenland. The Vicentine. 



Name. After Levy, the mineralogist, by 

 whom its crystallographic properties were 

 originallv examined. 



Brit. Mus., Case 27. 



Lherzolite. An olive-green variety of 

 Sahlite (Pj'roxene), occurring both crys- 

 tallized and lamellar at Lake Lherz in the 

 Pyrenees. 



LiBETHENiTE, Breithaupt. Rhombic : pri- 

 mary form a right rhombic prism. Fre- 

 quently cr^'stallized in prisms, combined 

 with the faces of the pyramid, and thus 

 assuming an octahedral appearance. Clea- 

 vage imperfect. Occurs also in radiated 

 masses. Colour olive-green, inclining to 

 blackish-green. Lustre resinous. Trans- 

 lucent at the edges. Streak olive-green. 

 Brittle. Fracture sub-conchoidal, uneven. 

 H. 4. S.G. 3-6 to 3-8. 



Comp. Phosphate of copper, or Cu* P + 



H = oxide of copper 66-5, phosphoric acid 

 29-7, water 3-8 = 100. 



Fig. 262. Fig. 263. 



Analysis, from Libethen, by Hermann : 



Phosphoric acid . . . 28-61 



Oxide of copper . . . 65-89 



Water ..... 5-50 



100-00 



BB on charcoal fuses to a brownish glo- 

 bule, which, by further action of the blow- 

 pipe, acquires a reddish-grey metallic lustre ; 

 in the centre is a small globule of metallic 

 copper. 



Soluble in nitric acid and ammonia, form- 

 ing a sky-blue solution. 



Localities. Cornwall ; near Redruth, and 

 at Gunnis Lake, near Callington, in gossan. 

 — Foreign. Libethen, near ^eusohl in Hun- 

 garj^ in cavities in Quartz, associated with 

 Copper P3'rites. Rheinbreitenbach on the 

 Rhine. Bolivia with Malachite. Mercedes 

 Mine, about 20 miles E. of Coquimbo in 

 Cliili. Olive-green, sometimes approaching 

 to black. Nischne-Taguilsk in the Ural. 

 Congo, in Portuguese Africa. 



Brit. Mus., Case 57. 



3LF.G. Principal Floor, Wall- case 16 

 (Foreign). 



LlEBENERITE, Dana. LlEBNERITE, 



Brooke 8j- 31Uler. An altered form of lolite. 

 Occurs in greenish-grey six-sided prisms, 

 which have no distinct cleavage. Lustre 

 greasy. Fracture splintery. H. 3-5. S.G. 2-8. 

 Analysis, by Marignac ; 



Silica 44-66 



Alumina . . . .36-51 

 Peroxide of iron . . . 1-75 



Potash 9-90 



Blagnesia , . . .1*40 



Soda 0-92 



Water, carbonic acid . . 4-49 



99-63 



BB intumesces and turns white, but does 

 not fuse. 



Locality. Mt. Viesena, Fleimser Valley, 

 in the Tyrol ; in porphyry. 



Brit. Mus., Case 31. 



LiEBENEKiTE. A pseudomorphous form 

 of Elseolite. 



