 | | Journal (article/letter/editorial) | | 45, 1982, PP. 87 99 The Laytonville Quarry (Mendocino County California) exotic block: iron-rich blueschist-facies...Sciences, University of Cambridge ABSTRACT. The Laytonville Quarry exotic block con- panying quartzites have...analysis recalculation, see the Appendix. THE Laytonville Quarry exotic block is the type locality for the...1965). Situated 8 km south of Laytonville (Mendocino County, California), the exotic block, originally...horizons while the accomFIG. 1. Lithology of the Laytonville Quarry exotic * Present address: 20 Emery Street |  | | Journal (article/letter/editorial) | | formula of Fe~-Fe3+Si~zO4o(OHho there are a limited range of substitutions: Ti and V for Fe 3§ and Mn on the... Washington State) indicate that its stability range is not quite the same as that o f the normal facies...TABLE I. Deerite localities I. Laytonville Quarry, Mendocino County, California: Agrell et al. (1965). z....Sonoma Co., California: Coleman and Lee (i963). 3. Panoche Pass, San Benito Co., California: Ernst (1965)...Pacheco Pass, California: Ernst et al. (197o). 5. Burn's Flats, Mendocino Co., California: Agrell (unpuhl |  | | Journal (article/letter/editorial) | | analysis shows that perhaps 8 0 % of the boxwork is calcite, the remaining 20% is quartz. The boxwork, as seen...layers are brown, rather coarsely crystalline calcite. Often only one of the outer layers is well developed... What an interesting specimen is this boxwork calcite! It is dark brown in color, each 2 x 2 inches in...arrival. CALIFORNIA—In the January 1966 Mineral Information Service, p. 7, published by California Division...zussmanite. These were discovered at a locality near Laytonville, Calif., and were named and first described by |  | | Journal (article/letter/editorial) | | assemblages, collected from the Laytonville Quarry, Mendocino County, California, it was found that the complexity...facies has now become generally accepted to cover a range of rocks that have suffered metamorphism under high...origin of certain blueschist mineralogies. In California the coincidence of these two rock types is common...presented by Newton & Fyfe (1976). (a) Although the calcite/aragonite inversion provided some of the earliest...conditions of supersaturation but it rapidly returns to calcite during re-uplift (Brown, Fyfe & Turner, 1962; Davis |  | | Journal (issue) | | Magazin 86-96 Achat- und Jaspisfundstellen in Arizona, USA AGAB MINIBUL 45(1), 01.12 1-15 La cubanite...effects on crystals 85-97 Victor Yount and his calcite collection 99-111 Sainte-Marie-aux-Mines 2011 111-132...aus der Last Chance Mine, Grant Co., New Mexico, USA 42-46 Roter Brookit und Anatas vom Monte Bregaceto...szenicsite, from Copper Creek, Pinal Co., Arizona, USA LAPIS 37(2), 02.12 9-11 Kesterit 13-16 Bazzit-Neufund...Fotowettbewerb 2011 MINERALIEN WELT 23(2), 04.12 16-23 Calcite aus der Sweetwater-Mine, Viburnum District 24-32 |  | | Journal (article/letter/editorial) | | its first description from the Franciscan of California by Agrell et al. (1965), the hydrous iron silicate...University of Washington, Seattle, Washington 98195, USA schist-facies metamorphism : K-Ar and Rb-Sr mineral...riebeckite - magnetite - almandine garnet - (apatite - calcite). Retrograde minerals probably related to the greenschist-facies...Sifnos (Greece), this paper. 2=93727, Laytonville, California (USA), Agrell etal. (1965), publ. in Agrell...(1970). 3=Laytonville, California (USA), Carmichael et al. (1966). 4= 101953, Laytonville, California (USA) |  | | Journal (article/letter/editorial) | | the blueschists of the Franciscan Formation, California, USA. Although only recently identified as a new...presently known Locality 1. Laytonville Quarry, Mendocino, County, California, USA Geological environment...Scoon's analysis of No. 93727 2. Panoche Pass, California, USA Metacherts in glaucophane schists of the Franciscan...aegirine, + garnet, aragonite (partly transformed to calcite), magnetite, pyrite, apatite (hematite) Ernst...Ernst (1965) 3. San LuisPacheco Pass, California, USA as in 2. Deerite (rare accessory), quartz, stilpnomelane |  | | Journal (article/letter/editorial) | | minerals from the Franciscan of the Laytonville District, Mendocino Co., Califomia (ebs.) Ahrens, L. H...traskite, verplanckite and muirite from Fresno County, California Stinson, NI. C. and Matthews, R. A. Seven...Seven new barium miuerals from eastern Fresno County, Californier (abs.) 1.2+ 2r0+ 278 273 Stinson, M...Seven new barium minerals from eastern Fresno County, California AJlan, D. with Brown, V. (Book 314 27 6...from eastern Fresno County, 2040 (Alfors, Aplite-pegmatites, composite, of California Stinson, the Franklin-Sylva |  | | Catalog/List | | A.JOITE CRYSTALS New Cornelia mine, Ajo, Pima County, Arizona. Hydrated copper aluminum silicate. New...scalenohedral calcite crystals These nodular forms occur encrusting large golden colored colored calcite scalenohedrons...CHALCOPYRITE CRYSTALS on SPHALERITE XLS ° Treece. Cherokee County, Kansas. Bright brassyellow metallic sphenoidal...groups. COPIAPITE CosO Hot Springs, Inyo Co., California A basic hydrated sulfate of ferric and ferrous...Traverse Creek, near Georgetown, El Dorado Co. , California. A basic calcium aluminum silicate. This is a |  | | Catalog/List | | grey-white crystals on 2x3.5 inch surface. (Croft Quarry,Leicestershire) £5 ANATASE sharp black single crystal...lxlxl .5 Levaeniemi Mine, Norbotten Sweden £6 CALCITE good covering of white dogtooth crystals from a...nodule location near Ely, Cambridgeshire. 2x3 £4 CALCITE large colourless, translucent rhombic crystal about...(BombayThane, India) just fits in a 2x2 inch box £10 CALCITE rhombic crystals from 1 to 2m in a group lx2 inches...limonite in between from Tynagh mine, near Loughrea. County Gahvay Ireland 4x4x2 £25 CERUSSITE good small thumbnail |  | | Journal (issue) | | batch of pieces we brought back from the Ritter Quarry that had nice thomsonite and mesolite, so that...cooling, the CaCO3 recrystallizes as the form of calcite called limestone. Other minerals will also crystallize...them from their surroundings by dissolving the calcite away using an acid bath. One group of minerals...lead to dolomite, CaMg(CO3)2, forming instead of calcite. As a more minor constituent, it often leads to...Wallowa Co., Oregon Fig. 2. Vesuvianite Mono Co., California 5 corresponding mineral is hedenbergite, CaFeSi2O6 |  | | Journal (article/letter/editorial) | | Blue Anchor point to StolJbrd rocks, Somerset, calcite, baryte, celestine, sphalerite, pyrite, chalcopyrite... hydrobasaluminite, basaluminite, 931 Merebead quarry, Somerset, mendipite, chloroxiphite, 9o i St. Austell...Sutherland, amphibolites, 2~ i Muirshiel, Renfrewshire, calcite, baryte, 446 Rhum, Inner Hebrides, olivine, 293;...Valle Vigezzo, Prov. Novara, vigezzite, 459 Osa quarry, Rome, gismondine, 84 I Sasso della Mantesca and...halite, trona, 34 I Sfibren-kalaalan Eskisehir county, deerite, 25i Iraq Sinjar, Mosul, sinjarite, 643 |  | | Journal (article/letter/editorial) | | variations in metabasalts of the Franciscan complex, California Received: 14 February 1994/Accepted 5 September...metabasaltic blocks from the Franciscan complex of California preserve extensive petrographic and chemical...isotope compositions of unaltered blocks are in the range expected for basalt derived from normal depleted...provided by analyses of actinolitic rinds, and range from B. K. Nelson Department of Geological Sciences...AJ-20, University or Washington, Seattle, WA 98195, USA Editorial responsibility: J. Hoers e.sa(160) = 1 |  | | Journal (article/letter/editorial) | | studies of the Franciscan formation, Coast Ranges, California* MORDECKAIMAGARITZand HUGH P. TAYLOR,JR. Division...Cahfornia Institute of Technology. Pasadena. California 91115. U S.A. (Recrrord 14 Aprd 1975; ucceptcd...(+ 13 to + 16). the 613C of vein aragonite and calcite is widely variable (0 to - 14), Implying that a...rocks. The range of 6D values of Franciscantype rocks is identical to the -50 to -80 range shown by most...pyroxene are largely replaced by chlorite, albite and calcite. (c) Conformably above the basaltic unit is the |  | | Report (volume) | | Colorado-Federal Center, Bldg. 810 • MENLO PARK, California-Bldg. 3, Rm. 3128, 345 Middlefield Rd. • RESTON...Complex and Evolution of the Mendocino Triple Junction, Northwestern California By R.j. McLAUGHLIN, W.V....complex and evolution of the Mendocino triple junction, northwestern California/ by R.J. Mclaughlin ... [et...bibliographical references. 1. Plate tectonics-California. Northern. 2. Geology, StructuralCalifornia,...1 Tectonostratigraphic· framework of the Cape Mendocino. region and adjacent northern Coast Ranges 2 Franciscan |  | | Journal (article/letter/editorial) | | Franciscan subduction complex in northwestern California Trevor A. Dumitrua*, W.G. Ernsta, Jeremy K. Houriganb...Stanford, California 94305, USA; bDepartment of Earth and Planetary Sciences, University of California, Santa...Santa Cruz, California 95064, USA; cGeology, Minerals, Energy and Geophysics Science Center, US Geological...Geological Survey, Menlo Park, California 94025, USA (Received 28 October 2014; accepted 11 January 2015) In...In northwestern California, the Franciscan subduction complex has been subdivided into seven major tectonostratigraphic |  | | Report (issue) | | Z=3 X-ray Powder Pattern: Franklin, New Jersey, USA. 2.935 (100), 1.814 (31), 1.837 (27), 3.753 (20)...Hora, Czech Republic. (2) Franklin, New Jersey, USA. (3) CaMn(CO3 )2 . Polymorphism & Series: Mineral...sediments. Association: Rhodochrosite, aragonite, calcite. Distribution: Analyzed material, shown to have...Sweden. From near Levane, Tuscany, Italy. In the USA, at Franklin and Sterling Hill, Ogdensburg, Sussex... Colorado; in the Longvale quarry, Laytonville, Mendocino Co., California; from Bald Knob, Alleghany |  | | Journal (article/letter/editorial) | | epidote, hornblende, diopsite, 427 Cheesewring quarry, Linkinhorne, danburite, 171; durangite, I72 Chycornish...Crowns Rock, St. Just, Land's End, garnet, 427 Dean quarry, The Lizard, djurle'ite, I72; analcime, adularia...pseudomorphous after analcime, 245; adularia, analcime, calcite, natrolite, quartz, prehnite, stilbite, 5o9 and...Porthoustock, The Lizard, analcime, natrolite, prehnite, calcite, 5o9 and M49 Redruth, uranospathite, II7 St. Just...Land's End, garnet, calcite, 427 Traboe, The Lizard, analcime, natrolite, prehnite, calcite, 5o9 and M49 Wheal |  | | Journal (issue) | | mine pegmatites, Ramona district, San Diego County, California ............................101 by E. E.... B. Spaulding R. A. Mason & R. F. Martin , California locality index ...........................................129 by A. R. Kampf & the Southern California Chapter of the Friends of Mineralogy, Locality...e P e g m a t it e s , istrc San Diego D ,California Eugene E. Foord U. S. Geological Survey, M....Louis B. Spaulding, Jr. P. O. Box 807, Ramona, California 92065 Roger A. M ason Dept, of Earth Sciences |  | | Journal (article/letter/editorial) | | Staffordshire, serpierite, 882. Mells quarry, Frome, Somerset, calcite, 70. Roughten Gill, Cumberland, carbonatian...localities, p. 1078: Castle an Dinas quarry; Cripple's Ease quarry; Great Zawn, Zennor; Knill's Steeple...Mount ; Tregarden quarry, Luxulyan ; Tremearne ; and Tresayes. Devon Meldon railway quarry, metamorphosed...pit; Locks Cross, Sherberton Common ; Merrivale quarry; Sheltor ; and Staple Vor. WALES Benallt mine,...microlite, samarskite, 50. Malawi Laytonville, Mendocino County~ zussmanite, 292. Tanzania Magnesioriebeekite |  | | Catalog/List | | SHASTA DRIVE, SAN JOSE, CALIFORNIA 95127 HALITE - Kern County, California (cavernous crystals) GEM...Legrandite. residents please add 4% sales tax. California Orders will be shipped within two days after...specimens, please don't ask. Wher. }'ou're in central California, stop by and see us anytime. Call before you...fl. yellow-green. ARAGONITE 3X4 - Sam Benito County, Califo.fnia - White needles groTdrting in radiating... 2X3 105 3X4 $2.25, 3X4 $3.25 CALCITE Var. POPCORN CALCITE - C-rand River, Paris, Ont„ Canada - |  | | Journal (article/letter/editorial) | | 07:06 06 January 2015 Klamath Cascade Mountains Range I 396 ROCKS & MINERALS Modoc Plateau / THE MINERALS...Library] at 07:06 06 January 2015 Even though California is known as the “Golden State, ” it could also...the Tourmaline State, or the Colemanite State. California is, in fact, one of the world’s greatest sources...localities, the reader is encouraged to consult the “California Locality Index” (Kampf et al. 1989). The bibliography...great deal from the many publications of the California Division of Mines and Geology. The most valuable |  | Orth, Charles J., Attrep, Moses, Quintana, Leonard R., Elder, William P., Kauffman, Erle G., Diner, Richard, Villamil, Tomas (1993) Elemental abundance anomalies in the late Cenomanian extinction interval: a search for the source(s) Earth and Planetary Science Letters, 117 (1) 189-204 doi:10.1016/0012-821x(93)90126-t | Journal (article/letter/editorial) | | Alamos, NM 87545, USA h U.S. Geological Surc,ey, Mail Stop 915, Menlo Park, CA 94025, USA " Department of...Uniuersity of Colorado, Boulder, CO 80309-0250, USA Received June 11, 1992; revision accepted February...60 0 Th (ppm)* 1.2 0 Ti (%) 60 Co (ppm)* * Calcite - free basis Fig. 2. Elemental abundance and ratio...3). Generally the abundances are reported on a calcite-free basis, Z = Z/[1( 0 . 0 2 5 * Ca(wt.%))], o...*(ppm) 0.24 0 Ir *(ppb) ~ N 33 Th *(ppm) Calcite - free basis 38 ° °'=o - 35 ~ ~ ~ ~ Z Z Z |  | | Journal (article/letter/editorial) | | Sixtieth Birthday, March 23-25. 1987. Pasadena. California. t Aisb: Department of Geology, the Radiation...IN THE CENTRAL PACIFIC OCEAN AND CALIF6RNIAN-LAYTONVILLE LIMESTONES To study Ce anomaly signatures in...the Franciscan central melange belt near Laytonville, California, were studied for C& values presumably...-95 My ago at 5002000 m bathyal depths above the calcite compensation depth (TARDUNO et al., 1986). These...concentrations in four representative Cretaceous Laytonville limestones reveal upper limits for a low detrital |  | IBUKI, Masaru, FUJIMOTO, Yoshikazu, TAKAYA, Masaki, MIYAKE, Akira, HIRAJIMA, Takao (2008) Howieite in meta-manganese siliceous rocks of Kurosegawa belt, western Kyushu, Japan. Journal of Mineralogical and Petrological Sciences, 103 (5) 365-370 doi:10.2465/jmps.080618 | Journal (article/letter/editorial) | | stilpnomelane (Mn stp), riebeckite, lawsonite, aegirine, calcite, quartz, and opaque minerals. Both Hw and Mn stp...cherts and meta ironstones in Yugoslavia and California, respectively. In Japan, taneyamalite (Tn), a...Mn stp, sodic amphibole, lawsonite, aegirine, calcite, quartz, and opaque minerals (Fig. 2). Chlorite... assuming all iron as FeO, shows a composition range of (K0.18–0.54Na0.06–0.15 Ba 0.06–0.12Ca 0.04–0...from the Franciscan of the Laytonville district, Mendocino County, California. American Mineralogist, 50 |
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