 | | Report (volume) | | the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized. The best...and sapphire are considered precious gems. Some opal is precious, but most varieties are semiprecious...Fluorite Apatite . 6. 7. 8. 9. 10. Orthoclase Quartz Topaz Corundum Diamond The numbers preceding each...of silica (quartz, 7 on Moh's scale) particles, a gem stone should be harder than quartz. Some minerals...react to heat are: violet quartz (amethyst) changing to orange brown, smoky quartz to yellow, pale-green |  | | Journal (issue) | | these many achievements that have helped to give mine ralogy a national recognit ion. Among your fri ends........................... REPORT ON THE TITANIUM MINE AT TAHAWUS, N . Y . By Paul E. Killinge,· .................... SOME GEM STONES OF NORTHEASTERN CALIFORNIA. By B. L. Handley .............................Dowler ................................ SOUTHERN CALIFORNIA LOCALITIES. 2. Lake Malibu. By 41 1 /ack Schwartz...to exist. Pegmatitic vugs lined with crystals of quartz, feldspar, corundum, tourmaline, beryl, etc., are |  | | Book | | Catalog Card Number: 74-1276 The pictures of gold-in-quartz, smithsonite, stilbite, and wulfenite on the front...often are arrested there. At the Eldorado sapphire mine in Mon¬ tana the action of a million years is readily...learn that gravel beds are rich in such minerals as quartz, feldspar, mica, garnet, tourmaline, magnetite...Schists often contain feldspar, garnet, mica and quartz. With sapphires are often found associated an abundance...oxide. Chalcedony, one of the common varieties of quartz, was formed in the same way. Pegmatites and Hematites |  | | Book (volume) | | THE SOUTHWESTERN QUADRANT Arizona, Arkansas, California, Colorado, Louisiana, Nevada, New Mexico, Oklahoma...The Southwestern Quadrant Arizoni, Arkansas, California, Colorado, Louisicna, Nevada, New Mexico, Oklahoma...Mineral Location Numbers Arizona Arkansas California Colorado 258 Louis B30 ana HOW TO USE...volumes, through very precise directions and accurate county maps, to get you to the best and most accessible...for the county in which it is located. This site number also appears under the given county in the text |  | | Book (edition) | | describes sites under of the nearest town and county. and the many maps included book contain such...4B^ Diamond M Tourmaline ^P Ruby. Sapphire O Quartz crystal ^J^ Garnet __ Azurite, Malachite, Chrysocolla...with respect to one another. gem minerals The quartz gems, such as amethyst, form crystal prisms with...another at 60 degrees and intersected by a fourth Quartz and vertical axis at right angles to the other...other, light) FELDSPAR TWINS I J PHENACITE QUARTZ CRYSTALS ffrl (^h /&> ^& \b^ ^ VESUVIANITE |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Diamond M Tourmaline fQl Ruby, O Sapphire Quartz crystal 'y^ Garnet — Azu rite, Malachite, Chrysocolla...Johnson, of Napa, California; Norman and Betty Lemkau of Castro Valley, California; Herbert V. Corbett...and Washington beaches, the Mojave desert of California and the Sonoran desert of Arizona, the lake beaches...in Maine and California; emerald in North Carolina, a big diamond or two in Arkansas, opal in Idaho, and |  | | Book (volume) | | ..........................................49 California ..............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ..................................................................45 Arizona – Yuma Co. Hull Mine Site Map ...................................... |  | | Book (volume) | | ..........................................39 California .............................................................................458 Appendix B - Quartz Family Gemstones ..................................467 Appendix D - The Various names & Forms of Opal .......................................473 Appendix...rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites |  | | Book (volume) | | ..........................................39 California .............................................................................460 Appendix B - Quartz Family Gemstones ..................................469 Appendix D - The Various names & Forms of Opal .......................................475 Appendix...rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites |  | | Book | | HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...it a veritable not just a picof informa- is mine tion, telling everything the collector needs to...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...can use a mountaineering bag or a mili- quarry or mine where a permit tary bag; make it it should...may be able to buy specimens. map of Keweenaw County. Mich- Part of the U.S. Geological Survey topographic | | | Book | | not just a picture book. Rather, it is a veritable mine of information, telling everything the collector...you If you plan to vIsIt an operating quarry or mine where a permll Is required make the necessary arrangements...LAKE BAILEY N I DELAWARE MINE DUMPS IOATOUTE CHLORASTROUTEI 2 AMYGDAlOID MINE DUMPS 3 AGATE HARBOR (AGATES...(AGATES THOMSONITE ON BEACH\ )l MUD VLAKE TO MANDAN MINE - HARD SURFACE Field drawing to locate a collecting...topographic map of the Delaware q uadrangle o f Keweenaw County, Michigan This ,s an example o f the more picturesque |
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