Ko. 112.] 791 



V 

 with brilliant gema and minerals.* Auglta garnet, zircon, sahlite, 



sphene, coccolite, adularia, rose colored quartz spar, epidote, 

 clorite, jasper, camelian, are among the minerals yielded by 

 these remarkable deposits. Veins of colophonite occur in Lewis, 

 Chesterfield and Willslx)ro'. This exceedingly splendid and beau- 

 tiful mineral is found in vast conglomerates, refulgent in the col- 

 oTi and luster of innumerable gems. 



An interesting substance, the type of a large deposit taken from 

 the farm of William Russell, in Chesterfield, is worthy of notice, 

 and is analysed below by Professor Salisbury. " This material, he 

 remarks, is so interesting from the large amount of sulphur and 

 sulphates of iron, it contains, that I gave it a thorough chemical 

 examination. If the deposit is sufficiently extensive, it may some 

 day, prove a source of wealth to the county.*^ 



One hundred parts dried, at 212^ gave of 



So. 16, -'1X4)118. »» 



Silica, 41.21 



Iron, 15 29 



Alumina, .• 5.*^ 



Sulphur, 27. 14 



Sulphuric acid, 8.85 



Lime, 1 .44 



Magnesia, 0.11 



Potassa, 0.2a 



Soda, 17 



Chlorine, trace 



99.80 



*• If this material is In sufliciont quantity, it may be used with 

 profit for the manufacture of sulphate of iron. On heating the 

 i-ock up to a low rfid heat, it takes fire and l)urns for some time, 



• I h^Tfl b<^o• f»ror»rl bj iho Ker. Mr. ratu**, w'.tb a m-^^ naj-ll.mlar (ind I ' ' " '.'•siting 

 4mor\pii<mo( tbo lattor lo<-AlitT. It U rtoaU-d noar KdmomrM poud, «t a pr ■ i b^i-o 



br as aralaudio to IH:{U. lu ibn Uvi uf a litti*' bixKfk, which leaM dowu ihv tdidv, innomiTa- 

 bw minoralfl nparkU, aod aro airown about tLe virini^f in >>v«rT dlri'otiuD. High i:p iht prc- 

 dipie«, a •«>ri«« of carM oocur, whlk>ii are tha pKuli^r d(i^<o»itj <>f ihr goms ajii luuMvrBi.^, a::d 

 almoit riral lu boauly and rariotj, tt\v oaiuroj of nMt«rn 0\.orj. ** IIph' arc found large boJ- 

 dora, and oven ledgn of calcajoouj apar, blue, wLitv, asd »oin»liaes bcaulifully rarirgaUnl 

 by oryitals of Apldoto, oooooliu>, and hornblondo. Thej arc oeoaaicmallj found io stiUaotltio 

 and cryftaLin« furm.-(. but more gOQCfalij Lu aiaurpliViu maMe«." '* Tbo ba«ajt is vbiefl/ fou£d 

 ia T«ifi« oAd djrkei." 



