☰ Is felsic magma silica rich? Magmas rich in felsic components such as quartz and orthoclase feldspar are higher in silica than those rich in igneous rocks. Magmas with a high silica content are ...

15. Carbonated mafic and felsic igneous rocks with green chrome mica quartz veins and pyrite This sample is also from Timmins, Ontario. [NOTE ORIGINAL PAGE LINKS TO SAMPLE 13.] Note the quartz veins ...

Surface grab assays of 229.88, 43.07, 19.09, 13.1, 10.79, 5.60, and 4.12 g/t Au are reported from grab samples of quartz vein material hosted in an altered felsic dyke.

X-Terra wants to highlight that copper and silver grades from drill results recently disclosed by Troilus Gold Corp (TLG) in its press release dated June 6, 2021, are in the same range as these ...

A network of felsic dykes including rhyolite and microgranite, crosscuts the sedimentary sequences, displaying NW, NNW, and NE trends. Hematite, sericite and silica alteration occur in the contact ...