Rapporto annuale . calcite veinsand fine-granite, felsitico rosa dighe taglio il nichel eruttive lungo la scogliera bordo delle acque. Questi eventi si trovano immediatamente a nord delle isole twolarge in quella parte del lago che si trova sulla parte nord del lotto 3ill la terza concessione della borgata di Cascaden. Le vene ed i dighe sono tanti as5 pollici di larghezza. Le dighe felsite sono più vecchie delle vene calcite, poiché queste ultime sono state trovate tagliando la prima. Le vene calcite contengono anche alcuni-(jiiartz. Possibilmente se una ricerca sistematica è stata fatta per queste vene di calcite alcuni di loro

• Collaboratore: The Reading Room / Alamy Foto Stock
• ID dell’immagine: 2AWHXX4
• Dimensioni dei file: 7,1 MB (376,3 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 1207 x 2069 px | 20,4 x 35 cm | 8 x 13,8 inches | 150dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

Annual report . calcite veinsand fine-grained, pink felsitic dikes cutting the nickel eruptive along the cliffsat the waters edge. These occurrences are found immediately north of the twolarge islands in that part of the lake which is situated on tlie north part of lot 3ill the third concession of Cascaden township. The veins and dikes are as much as5 inches in width. The felsite dikes are older than the calcite veins, since the-latter have been found cutting the former. The calcite veins contain also some-(jiiartz. Possibly if a systematic search were made for these calcite veins some ofthem might be found to contain smaltite or native silver. It is doubtful if much])rospecting has been carried on along the nickel eruptive with a view to finding-argentiferous veins. The nickel eruptive is very similar to the jSTipissing diabase-at Col)alt and elsewhere and probably of the same age. The Nickel Industry, pp. 93-94, Dept. of Mines, Ottawa, 1913, A. P. Coleman. 1920 Windy Lake and Other Nickel Areas 199. — CO C£_£ 200 Department of Mines No. 4 Tlie felsitic dikes and calcite veins were found in that part of the nickeleruptive showing the transition between the norite and micropegmatite. Thistransition zone is about 600 feet wide. Magnetic Survey by A. H. A. Robinson lu Marcli, 1919, while the ice was still on Windy lake, A. H. A. Eobinson ^made a careful survey of the lake for the Ontario Bureau of Mines with a magneto-meter in order to ascertain if there were indications of a body of pyrrhotite belowthe water. The results of Mr. Eobinsons work were disappointing. It may be added that the experience of the Mond Nickel Company has showntliat negative results, except over areas very deeply covered with drift or water, may be accepted as practically conclusive evidence that no pyrrhotite of any con-sequence exists. This is the statement made by C. V. Corless, manager of theMond Nickel Company, before the Royal Ontario Nickel Commission in October, 1916.- It will be note

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1890