This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...Rocks collected by W. H. Weed and L. V. Pirsson. Described in a paper on the Neihart and Barker mining districts in Pt. Ill of the 20th Ann. Analyses by W. F. Hillebrand, record No. 1476, and H. N. Stokes, record No. 1547. A. Rhyolite porphyry, Yogo Peak, sheet at head pf Belt and Running Wolf creeks. Toscanose. ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...Rocks collected by W. H. Weed and L. V. Pirsson. Described in a paper on the Neihart and Barker mining districts in Pt. Ill of the 20th Ann. Analyses by W. F. Hillebrand, record No. 1476, and H. N. Stokes, record No. 1547. A. Rhyolite porphyry, Yogo Peak, sheet at head pf Belt and Running Wolf creeks. Toscanose. Phenocrysts of orthoclase and quartz in a groundmass of quartz and alkali feldspar, with a little white mica and some kaolin. Chlorite, limonite, and calcite are also present, pseudomorphous after biotite and perhaps hornblende. Total amount of secondary minerals very small. Analysis by Hillebrand. P. R. C. 1474. B. Granite porphyry, Wolf Butte. Toscanose. Phenocrysts of quartz, orthoclase, plagioclase, and biotite in a groundmass of quartz and alkali feldspar. A little apatite and icon ore, with secondary calcite, limonite, chlorite, and white mica. Analysis by Stokes. P. R. C. 1475. C. Granite porphyry, top of Barker Mountain. Toscannse. Phenocrysts of orthoclase, oligoclase, biotite, green hornblende, sphene, and iron ore, in a groundmass of quartz and alkali feldspar. Also a little apatite and some secondary chlorite and limonite. Analysis by Stokes. P. R. C. 1476, D. Syenite, Wright and Edwards mine, Hughesville, near Barker. Totcanose. Very fresh rock. Contains magnetite, ilmenite, hornblende, anorthoclase, albite, subordinate quartz, a little chlorite, calcite, and limonite, and white mica in traces. Analysis by Stokes. P. R. C. 1477. E. Syenite, Yogo Peak. Afomonose. Described in Am. Jour. Sci., 3d ser., vol. 50, p. 471. Contains apatite, sphene, iron ore, pyroxene, hornblende, biotite, orthoclase, oligoclase, and quartz, with traces of chlorite and limonite and a little kaolin. Analysis by Hillebrand. P. R. C. 1478. F. Granite porphyry, dik...
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Seller's Description:
Good. Good in wrappers, a paperback. Pages brown. Cover starting to come apart from spine. Chipping to spine. Contains an envelope located in rear of book with a fold-out map inside. Cover light brown. Please Note: This book has been transferred to Between the Covers from another database and might not be described to our usual standards. Please inquire for more detailed condition information.
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Seller's Description:
82 pp., two folding maps in envelope inside back cover, Paperback, covers worn and soiled, else text clean & binding tight. -If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.