EARTHS. SILICEOUS. 55. Qiiartium. 



163 



Ji-vtelasam. With the fiirface uneven by fiialtow piis, of 2 commori 



form. 

 Found in }l-j}ig£pyy Bol^emifff near Freyharg and Scbntehurg in 

 Saxon^f s^nd in the quarrie? of S^ijedev : colour generally 

 v/hkilli. rarcH' violc! or ochraceotts ; mollly diaphauous, 

 though ibmetimes opake: the phs or hollow- very numerous 

 and cubic, rarely parallelcpipid or tricdo pyrsmidai, or iphc- 

 rical or tabular^ 



in mum. 



ercsum. 



Perforated with deep rouiid«^d hollows, of a common 



torm, 

 Kant en Lefie mineral. 1 p. Cj'^y 99. 

 Found near Fr&yhurg in SaxG^yy, and Pjear Scher^rfitx. in Hypgary: 



coiour white, greyiOi, or ochraceous : the hollows generally 



nirvovv, and lomeiimes flexuous. 



Full of numerous very minute empty hollows and cavities, 

 of a common form. 

 Born, ind./9ff, \, p. 26'. 

 Found in the mines of Hungary j white, vioiet, or dull greesiifh, 



ctlhhiitm. J^aj-nellar, with the pistes contiguous, placed at various 

 angles with each other and forming cells, of a com« 

 mon form. 

 Born ind.fcj}. I. f- 25. KarfeiiLeJk. l.p. jg. g8. 

 Cellular qoarti, Kir^ivcm miner, l. p. 244. 

 Cellular quarcz- ^ame'foji niineral. I. />. 153. 



a. With fimple j-fid.ed cell?. 

 h. With fimple 4. fided cells. 



c. Wiih fimple 6-fidcd cells, 



d. With limple ma^v'-lided ceTfj. 



e- With fimple rounded cell?, ibmetimes minute Hke fpongc, 

 f With fimple cells p^^fling iiuo gyrations . 

 g. With double cells. 



Found in Liberia near CctharinQp&Iisy in Hungary near Ciemmix 

 and Neofoltum, in Bohemia near 'Joachimjih&ly in Saxcmr near 

 Schnee'-tirg and Freyburg^ and the FaUtinate : colour fome- 

 times white, ibmetimes more or lefs tinged with oxydeof iron, 



lameUcium, Lamellar, with the plates parallel, of a common form. 



Quartz, fiffile lamellate Sy/i, nat. xii. 3./, 65. «. 5 ? 



Born, ind. foJJ\ 1 . j^. 2 5 . 2. /», 9 1 . 



Lamellar quartz. KiroK'an miner, i . p. 2^^, 



LaR.ellateci quartz. Schmeifer minp-, \, p. 93. 



Found hear Schem>2iic in Hungary^ and iQthe mines o^ Bohemia: 

 colour milk-white, white, violet, or brown: rarely yellow 

 and blue : the foliatioiis are ibmetiines very thin and com- 

 paired together, 



X2 



