GLOSSARY AND INDEX OF TERMS. 



Lapidification. [Lat. lapis, a sto v? ] 

 The process of changing to stc. . 



Lapilla. Small volcanic cinders. 



Lavender-blue. Blue with some 

 red and much gray. 



Leek-green. The color of the 

 leaves of garlic. 



Lenticular. Thin, with acute edges 

 something like a lens, except that 

 the surface is not curved. 



Leucitic. Containing leucite. 



Levigation. [Lat. levis, light.] The 

 process of reducing to a fine 

 powder. 



Liquation. [Lat. liquo, to melt] 

 The slow fusion of an alloy, by 

 which the more fusible flows out 

 and leaves the rest behind, 328. 



Lithographic stone. A compact 

 grayish or yellowish-gray lime- 

 stone of very even texture and 

 ^onchoidal fracture ; used in lith- 

 ography. That of Solenhofen, 

 near Munich, is most noted. 



Iiithology. [Gr. lit hos, stone, and 

 logos, a discourse.] Mineralogy. 



Lixiviate. [Lat. lixivium, lye.] 

 To form a lye, by allowing water 

 to stand upon earthy or alkaline 

 material, and draining it off be- 

 low, after it has dissolved the sol- 

 uble ingredients present. 



Lode. [Sax. loedan, to lead.] In 

 mining, a vein of mineral sub- 

 stance ; usually a vein of metallic 

 ore. The lode is said to be dead 

 when the material affords no 

 metal. 



Lodestone, 217. 



Made. A compound crystal, or one 

 having a „esselated structure. 



Magnesian. Containing magnesia. 



Magnetism rf minerals, 63. 



Malleable, [Lat. malleus, a ham- 

 mer,] 65. 



Mammillary, [Lat. mvmmilla, a 

 little teat,] 53. 



Manganesian. Containing man- 

 ganese. 



Marly. Having the nature of marl j 

 containing marl. 



Massive. Compact, and having no 

 regular form. 



Matrix. [Lat. matrix, from mater, 

 mother.] The rock or earthy 

 material, containing a mineral or 

 metallic ore. 



Metallic, 55, 56. Metallic-pearly, 

 55. Metallic-adamantine, 56. 



Metalliferous. Yielding metal. 



Metallurgy. [Gr. metallon, and 

 ergon, work.] The science of 

 the reduction of ores. 



Micaceous, 53. 



Mineralized. Changed to mineral 

 by impregnation with mineral 

 matter. Also being disguised in 

 character by combination with 

 other substances ; thus used with 

 regard to metals when in combi- 

 nation with sulphur, arsenic, car- 

 bonic acid, or anything that affects 

 their malleability and other qual- 

 ities. 



Molecules, 42. 



Molybdate. A salt containing 

 molybdic acid. 



Monoclinate, 33. 



Monometric, 32. 



Mountain limestone. A limestone 

 of the lower part of the coal se- 

 ries; called also carboniferous 

 limestone. 



Muffle, 317. 



Nacreous. Like pearl. 



Native metal, 202. 



Nitrate. A salt containing nitric 

 acid. 



Nitriary, 102. 



Nucleus. The center particle or 

 mass around which matter is ag- 

 gregated. 



Ochreous. Like ocher. 

 Octahedron, pp. 23, 25, 26. 

 Octahedral. Having the form of a* 



octahedron. 

 Odor of minerals, p. 66. 

 Oolite. [Gr. oon, egg,] p. 349. 

 Opalescence, p. 57. 

 Opaline. Like opal. 

 Opalized. Changed to opal. 



