Contributions to the Mineralogy of Victoria
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In our eReader you can find the full English version of the book. Read Contributions to the Mineralogy of Victoria Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Contributions to the Mineralogy of Victoria
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And also with the frequency of the common Sapphire in the gold-drifts of our western goldfields, especially Dayles- ford, Blue Mountain, Ballarat, Ballan, Loddon River, &c, where its being derived from older denuded basalts is generally considered an established fact. With regard to the origin of the fine Sapphires and Rubies found in the drifts of the extensive Beechworth goldfields, it is commonly thought that, as basalt appears to be absent, they come from the granite and other old crystalli...ne rocks abundant in that district. This is, however, also doubtful, for Mr. Selwyn found, in his geological exploration of that part of the country, not only pebbles of dense crystalline basalt dispersed through the drifts of the goldfields, but, in addition, that most of the high ranges from which the Beechworth creeks take their rise are capped by patches of older basalt, thus proving conclusively that extensive denudation of this rock has taken place, and it may therefore here also have been the matrix of the Sapphire.
What to read after Contributions to the Mineralogy of Victoria?
You can find similar books in the "Read Also" column, or choose other free books by George H F Ulrich to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
And also with the frequency of the common Sapphire in the gold-drifts of our western goldfields, especially Dayles- ford, Blue Mountain, Ballarat, Ballan, Loddon River, &c, where its being derived from older denuded basalts is generally considered an established fact. With regard to the origin of the fine Sapphires and Rubies found in the drifts of the extensive Beechworth goldfields, it is commonly thought that, as basalt appears to be absent, they come from the granite and other old crystalli...ne rocks abundant in that district. This is, however, also doubtful, for Mr. Selwyn found, in his geological exploration of that part of the country, not only pebbles of dense crystalline basalt dispersed through the drifts of the goldfields, but, in addition, that most of the high ranges from which the Beechworth creeks take their rise are capped by patches of older basalt, thus proving conclusively that extensive denudation of this rock has taken place, and it may therefore here also have been the matrix of the Sapphire.
What to read after Contributions to the Mineralogy of Victoria?
You can find similar books in the "Read Also" column, or choose other free books by George H F Ulrich to read onlineMoreLess
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