 | | Journal (article/letter/editorial) | | twinning in enstatite and pseudobrookite from Lemolo Lake, Douglas County, Oregon, USA Donald G. Howard and...found in a basaltic andesite at Lemolo Lake, Douglas County, Oregon. Multiple twins about a center have...have been observed. Pseudobrookite twins are present in the vesicles of the same rock. The composition...words: enstatite; pseudobrookite; twinning; catalyzed growth; Lemolo Lake, Oregon; Big Lue Mountains...of Oregon, such as at Summit Rock in extreme western Klamath County (Kleck 1970). Pseudobrookite is also |  | | Journal (article/letter/editorial) | | Filiform ilmenite crystals from Lemolo Lake, Douglas County, Oregon Donald G. Howard With 3 figures ...crystals of ilmenite, found in basaltic andesite at Lemolo Lake, are elongated along an a-axis and are therefore...filiform; ilmenite; catalyzed growth; Lemolo Lake, Oregon, USA. Slender black crystals of ilmenite,...andesite flow on the south side of Lemolo Lake in eastern Douglas County, Oregon, U. S.A. (43° 19′ 21″ N, 122°...fluoro-edenite, hematite, magnetite, phlogopite, pseudobrookite, titanite and zircon in addition to enstatite |  | | Journal (issue) | | WASHINGTON November 8, 2008 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...will be showing pictures of the new twins from Lemolo Lake, as well as of other choice pieces from the Northern...you can. PUD Park Washington Interstate Bridge Oregon Mill Plain Blvd. Ft. Vancouver Way Columbia... 3 Pseudobrookite Twins from the Lemolo Lake Quarry Don Howard and Kent England Pseudobrookite was...the United States. The crystal structure of pseudobrookite is orthorhombic, the most common form being |  | | Journal (issue) | | WASHINGTON May 3, 2003 9:00 am to 6:30 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...Way Washington Interstate Bridge Columbia River Oregon 2. IN MEMORY OF ELLIS ROBERTS 1914-2002 The...worked as a telephone linesman until he moved to Oregon in 1946. He joined the Coast Guard, serving five...five years installing telephone lines on the Oregon coast. Ellis met a beautiful girl, Barbara, and they...a school teacher for thirty years in Alaska and Oregon. Many grandchildreq followed, blessing Ellis' and |  | | Report (issue) | | (Fe3+2Ti)O5 Pseudobrookite Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. Commonly in short...deduction of SiO2 1.29%. (2) Cuchillo, New Mexico, USA; by electron microprobe, total Fe as Fe2O3. (3) Fe2TiO5...Ocean. In the USA, fine crystals from the Thomas Range, Juab Co., Utah; at Crater Lake, West Klamath...Klamath Co., and Lemolo Lake, Douglas Co., Oregon; at a number of places in the Black Range, Sierra Co., New...Mexico. From the Nine Mile Pluton, Marathon County, Wisconsin, USA. From Cerro los Remedios, Durango, Mexico |  | | Journal (issue) | | FALL, 2005 FALL MEETING ...............HILLSBORO, OREGON Saturday, November 5, 2005 9:30 am to 5:00 pm...and Minerals 26385 NW Groveland Drive Hillsboro, Oregon Once again we will be meeting in the NW Gallery...Minerals from the Bald Mountain Skarn, Jefferson County, Montana Larry B. French HC 46. Box7204 Miles City...Management. The area is shown on the 7.5 minute Delmoe Lake quadrangle produced by the U. S. Geological Survey...Howard, Editor 356 S. E. 44th Avenue Porfland, oregon 97215 e-mail: pogoette@hei.net DUES: $15 per year |  | | Journal (issue) | | WASHINGTON November 4, 2006 9:30 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...Way Washington Interstate Bridge Columbia River Oregon 2 The Bagdad Chase Mine, San Bernardino Co....producer of both gold and copper in San Bernardino County over the years. At one time, a spur railroad was...Howard, Editor 356 S. E. 44th Avenue Portland, Oregon 97215 e-mail: pogoette@hei.net DUES: $15 per year...Creswell, Oregon, 97426 e-mail: donlown@earthlink.net 5 A find of Titanite at Lemolo Lake Spillway, |  | | Journal (issue) | | WASHINGTON May 6, 2006 9:30 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...to be found in the cavities at Summit Rock and Lemolo Dam. There should I5 be ample time to enjoy looking...Ft. Vancouver Way Washington Interstate Bridge Oregon Columbia River 2 Hexagonal Filiform Minerals...filiform ilmenite crystals recently found at Lemolo Lake. The situation seems to be very similar. The...The other minerals present – enstatite, pseudobrookite, and especially tridymite – indicate that the formation |  | | Journal (issue) | | G. Howard, editor 356 SE 44th Avenue Portland, Oregon, 97215 e-mail: pogodh@hei.net DUES: $15 per year...“Kelly” Starnes 1276 SE Goodnight Avenue Corvallis, Oregon, 97333 e-mail: bikeklein@yahoo.com Zeolite Group...Cliffs, Lane Co., Oregon Fig. 3. Laihunite and Osumilite Obsidian Cliffs, Lane Co., Oregon 6 Fig. 4, Filiform...Filiform Ilmenite Lemolo Lake, Douglas Co., Oregon Fig. 5. Enstatite and Zircon (pink) Summit Rock,... Klamath Co., Oregon If there are a lot of dissolved gases in the lava, outgassing can generate a froth |  | | Journal (issue) | | R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University...Urals, Soviet Union; the Morefield mine, Amelia County, Virginia; and the Anjanabonoina pegmatite in Madagascar...eastern Chihuahua, the region east of Lago Jaco (Lake Jaco). The museum also has five research associates:...local fossils from the neighboring municipio 134 (county) of Zepotitlan’s famous San Juan de Reyes fossil...are found in abundance at Coso Hot Springs, Inyo County, California (Fig. 7). As will be seen, both types |  | | Journal (issue) | | Number 9 SPRING MEETING ............... HILLSBORO, OREGON Saturday, May 1, 2004 9:30 am to 5:00 pm Rice...and Minerals 26385 NW Groveland Drive Hillsboro, Oregon To reach the Rice Museum, take the Sunset Highway...Another Look At Lemolo Lake, Donald G. Howard Last summer's field trip to Lernolo Lake produced a considerable...Rock, the basic rock used to make the dam at Lemolo Lake is a fine-grained gray andesite. Exam ination...larger, and together with ferric iron allowed pseudobrookite to form. Psucdobrookitc cry513ls in this region |  | | Journal (issue) | | released when the vegetation decays, such as in lake sediments. The very insoluble compound calcium oxalate...localities in California, especially in Los Angeles County. The material probably is formed when the solutions...FOV = 1.5mm Jaquish Road, Goble, Columbia Co., Oregon 10 Fig 2 Chalcocite? FOV = 0.8mm Fig. 3 Chalcocite...found came from the spillway at Lemolo Lake, Klamath County, Oregon. I had seen this piece a number of...interior that is nearly devoid of cavities. Pseudobrookite, tridymite, and aegirine are found in nearby |  | | Journal (issue) | | Number 8 FALL MEETING ...............HILLSBORO, OREGON November 8, 2003 9:30 am to 5:00 pm Rice NWMuseum...and Minerals 26385 NW Groveland Drive Hillsboro, Oregon '--· We are meeting in a new location. To reach...Micromineral Study Group. He was also active in the Oregon Agate and Mineral Club, and in Friends of Mineralogy...agate and thunder egg locations in the state of Oregon, and for many years was an active participant in...Howard, Editor 356 S. E. 44'1' Avenue Portland, Oregon 97215 e-mail: pogoette@hei.net DUES: $15 per |  | | Catalog/List | | Old No. l Headfnme. Whi ■ key Hlll Mine, Tuohnne County, CaUfomla (r■-,u. .SV•t- tor cr11•t•J lJaed gold...feldspar. 784 ADAMITE, Moha\'.1k Mine, San Bernardino County, r.alifornia. Group o f colorless to light green...785 ADAMITE (CUPRIAN),MohawkMine, San Bernardino County, California. Nicely spaced transparent jade green...55:1447 (1970). 911 ALBITE,Clear Creek, San Benito County, California. White semi-transparent crystals on...reddish-brown dodecahedron. No matrix. near Goldfield, Nye County, Nevada. White 836A ALUNITE,zoned with JAROSITE |  | | Book | | Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187...--and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE MYERS --and...Allgood, J. Pradenas: Gold occurrences in Tuolumne County, California 18:41-45, 18:62-64 --with W. H. Wilkinson |  | | Book (edition) | | abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept...always included in text, except in the cases of the USA, UK, and the provinces Ontario and Quebec in Canada...Uintah County. Utah. and m (2.B. acanthite group). Monoclinic, C2/m, a,b,c Rio Blanco County. Colorado...California, in fine crystals in talc near Wenatchee Lake, Chelan co., Washington, also at Sulzer, Prince...Plat., Malawi, G 10 17 River Formation in Uintah County, Utah. Deer et al., v. 2A,483, 1997. Aenigmatite |
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Lemolo Lake, Douglas County, Oregon, USA