FLORID RED COPPER. 



Localities. It is found, at Huel Alfred, in 

 Cornwall; and in beds of Flint, in chalk, at 

 St. Omer, St. Ouen, and Menil Montant, 

 near Paris. 



Comp. According to Vauquelin it con- 

 sists of carbonate of lime 2, silica 98 = 100. 



Florid or Cochineal Red Copper, 

 Kirwan. See Red Copper Ore and Chal- 



COTBICHITE. 



Flos Ferri, or " Flower of Iron." 

 The name given to the branching or coral- 

 loid forms of Aragonite by the older mine- 

 ralogists, by whom it was considered to be 

 an ore of iron. It occurs in beds of iron- 

 ore, and very beautiful specimens are found, 

 associated with Spathic Iron, in the Styrian 

 mines of Eisenerz, and at Hiittenberg in 

 Carinthia, coating the roofs and sides of 

 considerable cavities. It is also found at 

 Dufton, in Cumberland, and at Halwell 

 Cavern, Broomfield, near Taunton in Somer- 

 setshire. 



Brit. Mus., Case 42. 



M.P.G. Horse-shoe Case, Nos. 429a to 

 432. 



Fluate of Cerium. See Fluocerite. 



Fluate of Lime, Phillips. See Fluor. 



Fluate of Yttria and Cerium, Berze- 

 lius. See Yttro-cerite. 



Flucerine, Beudant. See Fluocerite. 



Fluellite, Levy, Wollaston. Rhombic : 

 primary form a right rhombic prism, whose 

 base is to its height in the proportion of 1 

 to 3. Occurs in small acute rhombic octa- 



Fig. 189. 



hedronsj with the solid angles generally re- 

 placed. White, and transparent or trans- 

 lucent, with a vitreous lustre. H. 3. 



Localities. On a grey quartz-rock, asso- 

 ciated with acicular Wavellite and Uranite, 

 at Stenna Gwyn, near St. Austell in Corn- 

 wall. 



This is a very scarce mineral. It was 

 discovered by Levy, but examined and 

 named by Wollastoii, according to whom it 

 is composed of fluorine and alumiuium. 



Brit. Mus., Case 58, 



Fluocerine, Hausraann. Generally 

 found massive, but is supposed to show 

 traces of a rhombic dodecahedron. Colour a 

 line yellow, with a tinge of red -, brownish- 

 yellow when impure. Lustre vitreous or 

 resinous. Streak yellow, brownish. Sub- 

 translucent to opaque. H. 4*5 to 5. 



FLUOR. 



141 



Comp. Ce2 F3 + 3-e-e, H.- cerium 17-56, 

 fluorine 10'88, peroxide of cerium 66*41, 

 water 5-15 = 100-00. 



Locality. Finbo in Sweden. 



Fluocerite, Haidinger. Hexagonal. 

 Occurs in hexagonal prisms and plates : 

 also massive. Colour dark tile-red, or 

 nearly yellow, with a feeble lustre. Sub- 

 translucent to opaque. Streak white or 

 slightly yellowish. H. 4 to 5. S.G. 4-7. 



Comp. Peroxide of cerium 82-64, yttria 

 1-12, hydrofluoric acid 16-24 = 100-00. 

 (Berzelius.) 



BE alone, infusible ; but darkens. Fuses 

 slowl}^ but completely in borax and salt of 

 phosphorus, affording a globule which is 

 blood-red in the exterior flame, but becomes 

 colourless on cooling. 



Localities. Finbo and Broddbo, near 

 Fahlun, in Sweden; imbedded in Quartz, 

 and Albite. 



Fluocerium Basisches. See Fluoce- 

 rine. 



Fluocerium Neutbales. See Fluoce- 

 rite. 



Fluochlore, Hermann. See Pyro- 



CHLORE. 



Fluophosphate of Magnesia, Thorn- 

 son. See Wagnerite. 



Fluor, Dana; Fluorid of Calcium; 

 Fluorine, Beudant ; Fluor Spar ; Fluo- 

 rid OF Calcium; Fluss, Haidinger, 

 Hausmann, Werner; Flussaurer-Kalk; 

 Fluss SpATH, Werner, Naumann. Cu- 

 bical : primary form the regular octahedron. 

 Occurs crystallized in cubes, octahedrons, 

 rhombic dodecahedrons and their moditica- 

 tions; also nodular, compact and earthy. 

 Colour white, grey, and various tints of blue, 



Fig. 192. 



Fig. 193. 



green, yellow, purple, and red. Perfectly 

 limpid and transparent to subtranslucent. 

 Lustre vitreous; sometimes splendent; 



