688 



INDEX 



Ellipsoid, Fletcher, 185. 



of revolution, 184- 

 Embolite, 330, 645. 

 Emerald, 436. 

 Emery, 343. 

 Emplectite, 320, 628. 

 Enantiomorphous, 27. 

 Enargite, 326. 

 Endlichite, 511. 



Enstatite, 421, 604, 613, 677, 681. 

 Epiboulangerite, 624. . 

 Epididymite, 674, 676. 

 Epidote, 464, 466, 605, 616, 674, 676. 

 Epigenite, 621. 

 Epistilbite, 479, 671. 

 Epsomite, 119, 538, 600, 638. 

 Equatorial, 126. 



didigonal, 113. 



digonal, 121. 



dihexagonal, 85. 



di tetragonal, 65. 



ditrigonal, 101. 



hexagonal, 93. 



tetragonal, 72. 



trigonal, 105. 

 Erbium, tests, 572. 

 Erinite, 643. 

 Erythrite, 517, 651. 

 Etch figures, 62, 78. 

 Ettringite, 662. 

 Eucairite, 627. 

 Euchroite, 643. 

 Euclase, 680. 

 Eucryptite, 441. 

 Eudialyite, 665. 

 Eudidymite, 674, 676. 

 Eulytite, 651. 

 Eutectics, 241. 

 Euxenite, 668. 

 Evansite, 518, 656. 

 Excelsior, diamond, 283. 

 Expansion, 3. 

 Extinction, 186. 



angles, 185, 198. 



inclined, 198. 



parallel, 187. 



straight, 187. 

 Extraordinary ray, 169. 



Faces, similar, 11. 



vicinal, 267. 

 Fairfieldite, 655. 

 False topaz, 359. 

 Famatinite, 623. 

 Faujasite, 673. 

 Fayalite, 450, 658. 

 Feldsite, 408. 

 Feldspar group, 403, 404. 



lime, 413. 



Feldspar soda, 411. 



potash, 403. 

 Feldspars, monoclinic, 403. 



triclinic, 411. 

 Feldspathoids, 439. 

 Felsobanyite, 677. 

 Ferberite, 542. 

 Fergusonite, 506, 634, 669. 

 Ferronatrite, 635. 

 Ferrites, 233, 337. 

 Fibroferrite, 636. 

 Fibrolite, 461. 

 Fibrous, 266. 

 Fillowite, 653. 

 First median line, 173. 

 First order colors, 184- 

 Fischerite, 656. 

 Flame, 548. 

 Flame coloration, 553. 

 Fletcher ellipsoid, 185. 

 Flinkite, 652. 

 Flint, 361. 

 Florencite, 656. 

 Flos ferri, 393. 

 Fluellite, 679. 

 Fluocerite, 678. 

 Fluor-apatitc, 509. 

 Fluorescence, 280. 

 Fluorine, tests, 589. 

 Fluorite, 331, 603, 609, 662. 

 Fluorspar, 331, 609', 6G2. 

 Foliated, 269. 

 Fontaiiiebleau, 380. 

 Footeite, 644. 

 Forbesite, 651. 

 Forms, 21. 



derivation, 25. 



enantiomorphic, 27. 



fundamental, 23. 



gyroidal, 26. 



hemihedral, 25. 



holohedral, 24. 



holosymmetric, 23. 



polar, 55. 



tetartohedral, 27. 

 Formula, empirical, 227. 



general, 231. 



molecular, 2. 



structural, 227. 

 Forsterite, 450, 680. 

 Fowlerite, 430. 

 Fracture, 256, 258. 

 Franckeite, 624. 

 Franklinite, 375, 596, 633. 

 Freezing point, 1. 

 Freibergite, 325. 

 Freieslebenite, 624. 

 Friable, 258. 

 Friedelite, 666. 

 Fuchsite, 490. 

 Fusibility, 555. 



