)EARTHS. CALCAREOUS. 28. Apatites. 109 



Fluor, min. o£lj»edric. If all. Cyst. 1. p, 176. «. 4. b. 



Fluor fpar. Kiriuan mine'^al. i. p. 127. 



Sparry fluor. Schmeijjer min. 1 />. 237. 



Fluor fpar. Tbomfon chem. 3. />. 619, 



Fluate of lime. Soiverby Brit. min. tab, 26, 27, 



Rajhkigh Brit, miner. \. tab. z\. Jig. 1,2. 



^. With a fingle pyramid. 

 The pyramid inverfed. 

 The pyramid ftraight. 

 The pyramid 3-iided. 

 The pyramid truncate. 

 Truncate wiih fpherical faces. 

 The pyramid 6-iided, with fphserico concave faces, 



2. With a double pyramid- 

 The pyramid 4-fided. 



Found in Derbyjhirey Devo^/Jhirey and Cornn.valIy and in v<irioqs 

 parts of S'weden, Saxcny, and Bohemia ^ the colours vary like 

 Fl, fpatofus. 



28. APATITES. Confiding of carbonate of lime, 

 and phofphoric acid : brittle, hardifli: foluble in 

 nitric acid, melting in the fire wth difficulty, 

 but when powdered and thrown upon burning 

 . coals, emitting a yellowilh-green phofphorelcenc 

 light. 



rupestrit, Compa6l, opake, whitidi. 



Cronli.Phf.Journ.\']%%.Aug.f.2i^%. 



Phofphorite. Kirnx; an miner, i, />. 1 29. 



Phofphorated limcft ne Schmeijjer miner, i. p. 233. 



Phofphat of lime. Thomfon chem. 3. />. 616. 



Found at Estramadura in Spainy forming extenfive Grata with 



alternate ftrata of folid quartz: it melts wiih borax into 4 



white enamel, 



oSaedrus, In B-fided tables, of a rather greafy luftre, parafitical, 

 breaking into indeterminate fragments, fcmipellucid, 

 of a minutely granular texture, which is lamellar 

 when broken tranfverfely. 



Karsten Schr. Berl. Natur. 9. ^. 355. 



Found near Ehrenfnederjhorf in Saxony. 



^alularis, Ip 6-rided tables, of a rather greafy luftrc, parafitical, 

 breaking into indeterminate fragments, ol a minutely 

 granular texture, which when broken tranfveriely 15 

 lamellar. 



