LEIROCHROITE. 



Soda 

 Lime 

 Water 



. 13-20 

 . 1-52 

 . 13-tiO 



99-65 



BB fuses to a whrte enamel. 



Locality. Glenarm, Antrim, Ireland. 



Name. After Captain Lehunt. 



Leirochroite, or Kupferschadm. See 

 Tyro LITE. 



Lemanite, Dufrenoy. See Saussurite. 



Lemj^jian Earth. A 3'ellowish-grey or 

 white earth, frequently speckled withochre- 

 ous spots. Dull. Feels meagre. Adheres 

 slightly to the tongue. When placed in 

 Ayater gives ont numerous air-bubbles and 

 falls to pieces. Fracture earth}'. 



Comp. Hydrous silicate of alumina. 



Analysis, by Klaproth : 



Silica 66-00 



Alumina .... 14-50 



Oxide of iron . . . 6-00 



Soda ..... 3-50 



Lime and magnesia . . traces 



Water 8-50 



98-50 



Locality. Stalimene, the ancient Lemnos, 

 in the Mediterranean, where it was formerly 

 dug once a year, with great solemnity, on a 

 certain holy day in Juiy, in the presence of 

 the clergy and magistrates of the islana, 

 after reading prayers. 'I'he pits are described 

 by Woodward as situated in a great plain, 

 and the earth as forming a horizontal stra- 

 tum about four inches thick, the common 

 sort of a paler complexion lying imme- 

 diately beneath it. Two earths of Lemnos 

 were known to the ancients, viz. r-;,' A-^^wot, 

 Terra Lemnia, or Lemnian Earth, and 

 M<>i TO,- A.7t!Jt,vta,, Rubrica Lemnia, or Lemnian 

 Eeddle. 



We learn from Dioscorides that the Lem- 

 nian Earth was considered sacred, and that 

 only the priests w^-e allowed to meddle Avitti 

 it. They mixed it with goat's blood, and 

 then made it into cakes, upon which the 

 impression of a seal was added, with great 

 ceremonies ; from which circumstance it 

 was called (rtf^xy",; by the Greeks, and Spragis 

 by the Latins, that is, sealed earth. In con- 

 sequence of its being prepared by the priests 

 it also got the name of r-;^ h^it., or sacred 

 earth, which was the sealed earth very highly 

 esteemed in medicine, and called Lemnian 

 Earth by the phj^sicians. 



M.P.G. Horse-shoe Case, No. 1115. 



Lemnian Reddle. The Rubrica Lemnia, 



LEONHARDITE. 215 



or Lemnian Reddle, was a kind of Ochre of 

 a firm consistence and a deep red colour, 

 used by painters as a pigment. It was dug 

 in the same place as the Lemnian Earth, but 

 was not made into cakes or marked with 

 the impression of a seal, being sold in the 

 rough, as it was taken out of the pits. 



Lenticular Arseniate op Copper, 

 Allan ; LENTICULAR Ore, Jameson ; Len- 

 til-ore, or Lentulite. See Liroconite. 



Lenzinite, John. An aluminous sub- 

 stance allied to Halloysite. It is divided by 

 Phillips into two varieties, the opaline, S.G. 

 2-1 ; and the argillaceous, S.G. 1-8 : both of 

 a white colour, and occurring at Kail, in 

 the Eifel. 



The Lenzinite of Salvetat, which occurs 

 in pegmatite at La Yilate, near Chanteloube 

 (Haute Vienne) in France, is of a clear 

 brown colour. 



Co7np. Al Si + 3H. 

 Analysis of Opaline Lenz 



Silica . 



Alumina 



Lime . 



Water 



nite, 



by Joh 

 37-5 

 37-5 

 trace 



25-00 



100-0 

 Analysis, from Chanteloube, by Salvetat: 

 Silica 36-36 



Alumina 

 Peroxide of iron 

 Magnesia 

 Potash, Soda 

 Gelatinous silica 

 Quartz 

 Water . 



3(?-00 

 1-95 

 0-18 

 0-50 

 2 00 

 1-64 



21-50 



100-13 

 Name. After Lenz, a German mineralo- 

 gist. 



Brit. Mus., Case 26. 



Leonhardite, Blum. Cubical. Occurs 

 in prismatic crystals, grouped together in 

 bundles; also columnar and granular. Cleav- 

 age parallel Avith the lateral edges, very 

 perfect; basal cleavage imperfect. Colour 

 Avhite or j^ellowish-white ; i-arely brownish. 

 Lustre vitreous;, of cleavage-face pearly. 

 Translucent at the edges. Very friable. 

 Effloresces and whitens in the air. H. 3 to 

 3-5. S.G. 2-25. 



Comp. 3Cafei+4Al Si^ + 12 11 = silica 

 56-2, alumina 22-7, lime 9-2, water 11-9 = 

 100. 



Analysis, by Dellfs : 



Silica ..... 56-13 



Alumina .... 22-98 



p3 



