Geologic Reconnaissance in the Matanuska and Talkeetna Basins, AlaskaU.S. Government Printing Office, 1907 - 71 sayfa |
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76 sonuçtan 1-5 arası sonuçlar
Sayfa 21
... pieces of a fresh granitic rock - a hornblende - biotite - quartz monzonite . The arkose is composed largely of rounded and angular fragments of feldspar in a more or less advanced state of alteration . Quartz is notably absent . Deep ...
... pieces of a fresh granitic rock - a hornblende - biotite - quartz monzonite . The arkose is composed largely of rounded and angular fragments of feldspar in a more or less advanced state of alteration . Quartz is notably absent . Deep ...
Sayfa 171
... pieces are angular . A considerable portion is in nuggets worth from $ 1 to $ 20 . When sluicing was in progress , a daily yield of $ 10 to $ 18 to the shovel was claimed , which , if true , would require an average gold content of ...
... pieces are angular . A considerable portion is in nuggets worth from $ 1 to $ 20 . When sluicing was in progress , a daily yield of $ 10 to $ 18 to the shovel was claimed , which , if true , would require an average gold content of ...
Sayfa 175
... pieces are crystalline . The concentrates contain ilmen- ite , hematite , and scheelite . It is not probable that the gravels are of very high grade , for although mining began here about 1901 only a small area was worked previous to ...
... pieces are crystalline . The concentrates contain ilmen- ite , hematite , and scheelite . It is not probable that the gravels are of very high grade , for although mining began here about 1901 only a small area was worked previous to ...
Sayfa 176
... pieces of quartz . In the lower part of the creek the gold is fine and little work has been done . Dexter Creek . - Dexter Creek is a western tributary of Nome River about 7 miles from the coast . It forks about 2 miles from its mouth ...
... pieces of quartz . In the lower part of the creek the gold is fine and little work has been done . Dexter Creek . - Dexter Creek is a western tributary of Nome River about 7 miles from the coast . It forks about 2 miles from its mouth ...
Sayfa 178
... pieces are smooth , and no corners or angles remain . About a quarter of a mile above the forks , in Grass Gulch , is one of the richest of the Dexter Creek mines . Here a pit 150 feet wide by 300 or 400 feet long , mostly on the south ...
... pieces are smooth , and no corners or angles remain . About a quarter of a mile above the forks , in Grass Gulch , is one of the richest of the Dexter Creek mines . Here a pit 150 feet wide by 300 or 400 feet long , mostly on the south ...
Sık kullanılan terimler ve kelime öbekleri
Alaska andesite Anvil Creek basin beach beam bed rock bench Bendeleben Mountains bowlders Brooks Bull Cape Nome cement cent channel Chickaloon Chickaloon Creek chloritic claims clay coal coarse coastal plain Collier concrete conglomerate contain creek bed district ditch east elevation erosion feet thick Geological Survey geology Glacier gold placers granite graphitic gravel greenstone Gulch inches intrusive Iron Creek Jurassic Kenai Kigluaik Mountains Knik Knik River Kougarok Kuzitrin Kuzitrin River limestone lower Matanuska Matanuska River material mica schist miles mineral mining Moffit mouth muck Niukluk Niukluk River Nome and Norton Nome group Nome River Norton Bay Norton Bay regions nuggets occur Ophir Creek pay streak pebbles placer gold Port Clarence probably reconnaissance reported sand sandstones schist Seward Peninsula Shale slates slopes sluice boxes special publication stream surface Susitna Talkeetna Mountains test pieces tributary U. S. Geol upper valley
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Sayfa 23 - ... no objection to the holding of orderly meetings for the discussion of ordinary business affairs, in any meeting held for the purpose of acting in district affairs no person is entitled to participate excepting claim holders. Any attempt so to participate by other persons is illegal, and the proper steps will be taken to prevent it. Decisions and orders of the civil courts will be supported by the entire power and authority of the United States troops. No persons will be allowed to carry firearms,...