nib: OREGON NATURALIST. 



91 



Lincoln county alone but in Catawba county 

 as well, has pioduced some of the finest and 

 rarest quartz on record. Its wealth in this 

 line is little known as yet. 



It will be years and after the expenditure of 

 a great deal of money, before anything like a 

 systematic collection of these quartzes can be 

 gathered together. A collector working every 

 day for a year could make but an indifferent 

 collection of them. I believe that every known 

 variety of crystalize<1 quartz will ultimately be 

 found here. The belt is not veiy extensive, 

 only a few square miles. 



To the east the rocks change and the quartz 

 loses its ciystalline form. To the south and 

 west long stietches of territory intervene with 

 no quartz worth the name. 



The forms most commonly met with are the 

 crystals, in all sizes and twisted into every 

 conceivable shape, with cavities tilied with 

 foreign matter as clay, ochre, wad, mica, 

 chlorite, kaolin, water etc. and at the same 

 time presenting modifications of the greatest 

 interest to the scientist. The so-called "basal- 

 plane" is found more plentiful here than any 

 where else and highly developed. 



What seems like a very complex system of 

 etching is common in places, the causes 

 of which seems to baftle the best 

 judgment to account for. Dana seems 

 to think one series at least (the 

 tine stria running across the prism faces) is 

 produced by an oscillatory movement, an 

 indecision so to speak, on the part of the matter 

 as to whether a single or a twin crystal should 

 be produced. This may be true but it fails to 

 account for many strange things seen in some 

 crystals. The erosive power of heated mineral 

 waters has been very active here and has had 

 much to do in producing these odd forms. 



One true "twin of opposite relation" at least 

 was found here. Many specimens found here 

 are very large and very beautiful. The colors 

 are clear, smoked and purple in a jirofusion of 

 tints. The great drain on the locality for the 

 past year is diminishing the supply very per- 

 ceptibly. They are dug out of old rotten veins 



with no trace of a rock wall other than a yellow 

 earthy matter showing where the old wall has- 

 utterly changed. Very few minerals are found 

 in association. Always mica, sometimes 

 tourmaline, rutile, crystals of magnetite and 

 hematite, zircon, monazite, and xenotime. 

 One small lot of crystals had small crystals 

 of tourmaline netted all over the surface. 

 Specimens of this kind are rarities. 



Fine specimens have been found in other 

 counties but sparingly, Henderson, Macon, 

 Yancey, Mitchell, Cleveland, Burke, Gaston, 

 Polk, and Transylvania are among them. 

 Some few fine specimens enclosing chlorite to 

 such an extent as fO color the stone have been 

 found in Guilford county. Tabular crystals 

 in perfection are found in Mitchell county. 



Chrysoprase of a fair quality is found near 

 Mooresboro, in Cleveland county. 



The color is blue-green and translucent. 

 No work has been done. The mineral is found 

 in mica schist enclosed in chalk like .bowlders. 



Clear wedge-shaped crystals enclosing silvery 

 mica are found sparingly in places' in Cleve- 

 land county, near Toluca. Amethyst and 

 rutilated quartz will be treated under separate 

 heads. Agate, opal, chalcedony, jasper, and 

 bloodstone have been found but I cannot speak 

 of them personally. E. H. Harn, 



Henry, N. C. 



AN INDIAN MOUND. 

 On April 14, my friend Oilman VVinthrop, 

 and myself, left town for a snipe hunt. We 

 went to a very large lake, about three miles 

 from town, known as Lake, Jackson. After 

 shooting a few snipe, we set out for this Indian 

 Mound, of'which I had o'ten heard, but never 

 seen. We soon reached the place and I was 

 surprised to see such an immense piece of work. 

 The mound is about sixty feet high and per- 

 fectly flat on top. The sides are almost per- 

 pendicular, and to reach the top, it is necessary 

 to use the trees growing on the sides. On the 

 flat top grow many varieties of trees, some 

 reaching the height of about forty feet. On 

 the north side there is d thick growth of under- 

 brush and vines, so thick that to make your 



