 | Donato, Paola, Donato, Sandro, Barba, Luis, Crisci, Gino Mirocle, Crocco, Maria Caterina, Davoli, Mariano, Filosa, Raffaele, Formoso, Vincenzo, Niceforo, Giancarlo, Pastrana, Alejandro, Solano, Andrea, De Rosa, Rosanna (2022) Influence of Chemical Composition and Microvesiculation on the Chromatic Features of the Obsidian of Sierra de las Navajas (Hidalgo, Mexico) Minerals, 12 (2) 177 doi:10.3390/min12020177 | Journal (article/letter/editorial) | | Microvesiculation on the Chromatic Features of the Obsidian of Sierra de las Navajas (Hidalgo, Mexico) Paola...Microvesiculation on the Chromatic Features of the Obsidian of Sierra de las Navajas (Hidalgo, Mexico). Minerals...unical.it; Tel.: +39-329-9338189 Abstract: The obsidian of Sierra de las Navajas is well known for its...with previous studies, the green color of the obsidian seems to be related to a high iron content, probably...characteristics that were important features for the use of obsidian in the past, such as fracture, transparency, and |  | | Journal (issue) | | alpha-supply.corn -" .... • NW Federation Show King County Fairgrounds Enumclaw, WA August 31, Sept 1 & 2...2, 2001 Portland Regional Show Hillsboro, Oregon Oct 5-7, 2001 Dealer Inquiries Welcome -' ALPHA Supply...Sendaddresschangeslo Rock & Gtm, Field Trip Glass Buttes Obsidian 64 Visit Oregon's best collecting site;...Gems·. Puyallup Valley Gem & Mmeral Club: King County Fairgrounds, Fri. 10-5. Sal 10-5, Sun 10-5: admission...demonstrations. displays, swapp,ng, lluorescent mlnerals, county store, Junior ac1ivi1ies, NFMS convenhon. field |  | | Journal (issue) | | and more! Neptunite Benitoite Gem Mine San Benito County,CA Martin Zinn Collection Photo by Jeff Scovil...public school system in the Willamette Valley of Oregon. During that time, our schools had a wonderful...long, narrow mountain range in southern Doña Ana County, New Mexico, near the border with Mexico. The mountains...East Potrillo Mountains and Vicinity, Doña Ana County, New Mexico” is a good resource on the geology...Highway 9 for 16.2 miles, and turn right (north) onto County Road (CR) A008. This road is on the east side of |  | | Journal (issue) | | But it is in the reserve of Test Station, China Lake, California. “Anyone for the exit roll call is going...receiving it, my subscription to start with North Bend, Oregon THE STORY OF THE 1 GEMS Pollyanna B. Hughes...Otticer of the Naval Ordnance Test Station at China Lake. Arrangements must be made ahead of time. A list...sloping pedestals of numerous sandstone-capped buttes and pinnacles along the highway past Ute Peak on...recently visited the site of a demolished dam in Union County State Park, near Beresford, South Dakota. The group |  | | Book | | wet, were transparent —some of them as clear as glass. When they dried off, the surface was opaque from...masses of unbroken rock, to the western shore of Lake These two pictures show a complete wave in sedimentary...size of your head. From here, go to the beaches of Oregon and Washington, where there are miles of pebble...Collecting agates at the wrack line on Agate Beach, Oregon. 10 GEMSTONES AND MINERALS Igneous Rocks...gases trapped in it to make it flow as a froth. Obsidian, when very old, will become porous and absorb |  | | Journal (issue) | | Exploring a New Deposit Discovery in North Central Oregon Complex, Plentiful, and Affordable By Bob Jones...specimen of opal from the prolific USA locality of Butte, Oregon, reveals a carving-grade opal as it...an OPAL PRIZE PACK! (Se e d e ta ils b e lo w) Oregon Pink Opal Outlaw Rocks Explo re the Wo nde r o...ke tt.c o m o r 972- 490- 5212 Ethiopian Opal Oregon Chocolate Fire Opal Kingsley North Outlaw Rocks...at Bower Powers Farm, in Pierrepont, St Lawrence County, New York. The locality produced lustrous black |  | | Journal (issue) | | $1.50 per lb. Medium dark - moat popular color In USA$ .04 per carat ... $4.00 per tot Pata de Gallo Agate...50 to ORDERS MUST INCLUDE A $2.00 fee if in the USA receive our new Fall list of all others including...SHAPES in any slabbed stone - jade, quartz, agate, glass, etc. Faster and easier than grinding. HI-Strength...World's Fair of Gems and Minerals." Host. Clark County Gem Collectora. Las Vegas Convention Center. Las...Society. Annual Show In conjunction with Fresno County Fair. Fresno. CA. 10-10 dally except 31st, 10-6 |  | | Journal (issue) | | Measurements: %V2 xlVi x 5%" Page JEWEL BOX OF IMPERIAL COUNTY, CALIFORNIA by Mary Frances HOW TO GO ROCKHOUNDING..."Jewel Box" in the northeast corner of Imperial County, Calif. The Wiley Well area (the name by which...basalt of a much later origin. Chimneys, scarps, and buttes, chiseled out of flat or tilted beds of this volcanic...Jade WA, 4-2130 CHICAGO 9, ILUNOIS COUNTY MPERIAL COUNTY Rl V " I E RS IDE l/£M£/VT6' "^^^ \^/j;t-4...ginkgo and, while some imported trees are growing in Oregon now, they do not thrive in Washington. The ginkgo |  | | Book (edition) | | Hoodoos, and 4. Igneous Rocks Igneous Rocks: Obsidian Igneous Rocks: Granite 5. 6. 7. 8. 9. 10...slightly is best: first dissolve in a water-filled glass or plastic vessel all the dry acid crystals that...of vinegar) or hydrochloric acid in a plastic or glass container. Here, too, try out a small specimen first...utility to the collector is some sort of magnifying glass. For field work the inexpensive ones are ordinarily...thread. Test tubes from chemical supply houses are glass tubes 6 % or 8 in. (15 or 20 cm) long, and about |  | | Book | | through a rather strange activity. magnifying glass, and you begin to see Yet go to a beach or any...Below are stones of the mineral onyx. magnifying glass you can see three different minerals. There are...to tell. magnifying glass might reveal tiny red spots under the magnifying glass. A rock hunter might... The Basin and Range Province of the south-west USA (right) formed in this way. and also when what are...historical record. If there has not been through glass. The longer the crack, both the Kobe (Japan) quake |  | | Book (volume) | | mentioned: Vermont, Pennsylvania, North Carolina, Oregon, Kansas, Alabama, Ohio, Oklahoma, Arkansas, Wyoming...on the production of Montana alluvial sapphires. Oregon chalcedonies were ably described by Chet and Marge...of Terrebonne, Oregon. Information was also supplied by Dowse’s Agate Shop, Salt Lake City, Utah, by...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken |
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Glass Buttes, Lake County, Oregon, USA