692 



INDEX 



Mamillary, 273. 

 Manebach twins, 406. 

 M'anganese, tests, 574. 

 Manganite, 367, 596, 632. 

 Mangano-columbite, 665. 

 Manganoferrite, 371. 

 Manganosite, 340, 667. 

 Manganostibnite, 651. 

 Marble, 385. 



Marcasite, 317, 599, 630. 

 Margarite, 496, 672. 

 Marialite, 453, 676. 

 Marshite, 645. 

 Martinite, 656. 

 Martite, 345. 

 Mascagnite, 638. 

 Massicot, 341, 649. 

 Massive, 368. 

 Matildite, 629. 

 Matrass, 557. 

 Mauzeliite, 646. 

 Mazapilite, 652. 

 Mean refractive index, 171. 

 Measurement of crystals, 149. 

 Meerschaum, 501. 

 Meionite, 453. 

 Melaconite, 340, 596, 631. 

 Melanite, 444. 

 Melanocerite, 665. 

 Melanophlogite, 680. 

 Melanostibian, 633. 

 Melanotekite, 628, 648. 

 Melanterite, 539, 600, 636. 

 Melilite, 675. 

 Meionite, 626. 

 Melting point, 238. 

 Menaccanite, 346, 596. 

 Mendeleef's table, 223. 

 Mendozite, 637. 

 Meneghinite, 624. 

 Mercury, 293, 631. 

 Mercury, tests, 579. 

 Mesitite, 229, 388. 

 Mesolite, 673. 

 Metacinnabar, 305. 

 Metallic luster, 274. 

 Metallic mirror, 557. 

 Metamorphism, 248. 

 Metasilicates, 233. 

 Metasilicic acid, 233. 

 Metastable, 243. 

 Metavoltaite, 635. 

 Methylene iodide, 211, 263. 

 Miargyrite, 625. 

 Mica, 488. 



brittle, 496. 



group, 488. 



percussion figure, 489. 



plate, 194. 



1st class, 493. 



2d class, 493. 



Micaceous, 257. 



cleavage, 489. 



hematite, 343. 



Microcline, 409, 604, 613, 675. 

 Microlite, 669. 

 Microperthite, 408. 

 Microsommite, 674. 

 Miersite, 646. 

 Milarite, 675. 

 Millerian indices, 18. 

 Millerite, 307, 599, 630. 

 Mimetite, 95, 512, 646. 

 Mineral; 219. 



groups, 232. 

 Mineralizers, 246. 

 Minerals, color of, 273. 



index of refraction, 165. 



luster of, 274, 278. 



rock-forming, 609. 



specific gravity, 260. 



table of, 617. 

 Minervite, 656. 

 Minium, 649. 

 Mirabilite, 535, 600, 637. 

 Mispickel, 318. 

 Mixite, 642. 

 Mizzonite, 453. 

 Models, 28. 



Moh's scale of hardness, 259. 

 Molecular, volume, 228. 

 Molybdates, 236. 

 Molybdenite, 296, 596, 597, 630. 

 Molybdenum, tests, 586. 

 Monazite, 507, 603, 657. 

 Monetite, 655. 



Monobromonaphthalene, 215. 

 Monochromatic light, 183. 

 Monoclinic crystals, 120. 



axial ratio, 128. 



dispersion, 207. 



extinction, 198. 



pyroxenes, 423. 



system, 17, 120. 



twins, 148. 

 Monoxides, 337. 

 Montanite, 651. 

 Montebrasite, 657. 

 Monticellite, 449. 

 Montroydite, 641. 

 Mordenite, 479, 672. 

 Morenosite, 539, 637, 669. 

 Morganite, 437. 

 Mosandrite, 668, 

 Moss agate, 361. 

 Mossite, 634. 

 Muscovite, 488, 489, 601, 614, 672. 



N 



Nadorite, 647. 

 Nagyagite, 625. 



