 ... along lines that trend northeast and northwest, the longest group observed being about 100 feet long. The topaz also forms narrow veinlets that cut across the foliation in the schist, and thin lenses in the planes of schistosity; and grains of topaz...  Muscovite in the Spruce Pine District, North Carolina - Page 68by Thomas Lingle Kesler, Jerry Chipman Olson - 1942 - 38 pagesFull view - About this book
 | Mines and mineral resources - 1942 - 628 pages
...the planes of schistosity; and grains of topaz are disseminated in the schist at some places.****. The district contains probable reserves amounting...there are possible reserves of about 194,800 tons of topaz -bear ing rock of the same grade, which would contain roughly 29,000 tons of topaz. Further exploration... | |
| |
