| | 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 (issue) | Three Interesting Silicates from the Laytonville Quarry, California Robert J. Lauf Oak Ridge, Tennessee...minerals were discovered at the Laytonville quarry, Mendocino Co., California, Agrell and coworkers took the... Geology of the Laytonville Quarry The Laytonville quarry, Mendocino Co., California, contains metamorphosed...aragonite (Agrell, Bown, and McKie 1964). The Laytonville quarry exotic block represents a series of deep-ocean... France, and by Coleman in 1959 at Cuzadero, California, are all deerite (Muir Wood 1979). (Continues | | | 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...breakdown of albite = jadeite+quartz and the low pressure stability of jadeite = albite+nepheline. Within...the 'state' of the albite. All experimental work, even that starting with low albite, is actually investigating | | | Journal (article/letter/editorial) | stilpnomelane and chlorite (in the presence of iron oxides, albite, etc.) produce an initial 'riebeckitic' amphibole...this paper were collected from localities in California, Oregon, Washington State, the Alps, and Greece...authors' works: Laytonvitle Quarry exotic block, Mendocino Co., California--Chesterman (i966); Ward Creek...Creek, Cazadero, Sonoma Co., California--Coleman and Lee 0963); Panoche Pass, San Benito Co., Calif o...Creek (South Fork), Santa Clara Co., California and Powers Quarry, Coos Co., Oregon--Muir Wood (I977); | | | Journal (article/letter/editorial) | 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...in a quarry on the east side of Highway 101 in Mendocino County, 5.4 miles south of Laytonville or 4...radiating clusters of bladed, black crystals that range up to about half an inch in length. When rubbed...disseminated in quartz and stilpnomelane. At the quarry all three of these minerals occur in quartz-rich | | | Journal (article/letter/editorial) | its first description from the Franciscan of California by Agrell et al. (1965), the hydrous iron silicate...southern part is built predominantly of marbles, albite-rich greenschists, and micaschists. There is strong...University of Washington, Seattle, Washington 98195, USA schist-facies metamorphism : K-Ar and Rb-Sr mineral...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) | minerals from the Franciscan of the Laytonville District, Mendocino Co., Califomia (ebs.) Ahrens, L. H...Pavlenko, A. S., Or lova, L. P. and Tobelko, K. I. Albite, deformation bands in (Seifert) . . .. Alexandrite...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 | | | 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) | 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...(hematite) Ernst (1965) 3. San LuisPacheco Pass, California, USA as in 2. Deerite (rare accessory), quartz...Seki (1967) 4. Ward Creek, Cazadero area, California, USA Meta-ironstones in glaucophane schists of | | | Journal (article/letter/editorial) | University of New Mexico, Albuquerque, NM 87131, USA Abstract. The phase relations of A1- and Fe-bearing...meta-ironstone from the Franciscan Formation, California. These relations allow an estimation of the physiochemical...of the Franciscan Formation in the Laytonville Quarry, California (e.g., Muir Wood 1982). These rocks...minnesotaite are index minerals in the lowest metamorphic range of iron-formations, but they react with the assemblage...1983a; Haase 1982a). Grunerite has a wide stability range up to that of the granulite facies (e.g. Klein 1978; | | | Journal (article/letter/editorial) | complex: architecture of the Franciscan Complex, California, at multiple length and time scales John Wakabayashi...and Environmental Sciences, California State University, Fresno, CA, USA Published online: 03 Feb 2015...complex: architecture of the Franciscan Complex, California, at multiple length and time scales, International...complex: architecture of the Franciscan Complex, California, at multiple length and time scales John Wakabayashi*...and Environmental Sciences, California State University, Fresno, CA, USA Downloaded by [ECU Libraries] | | | Catalog/List | CATALOGUE 90 ~~ ---- (SIZES MAINLY IN INCHES) ALBITE variety Pericline, 5 mm crystals over a 4x2.5 surface...grey-white crystals on 2x3.5 inch surface. (Croft Quarry,Leicestershire) £5 ANATASE sharp black single crystal...limonite in between from Tynagh mine, near Loughrea. County Gahvay Ireland 4x4x2 £25 CERUSSITE good small thumbnail...Arizona, USA) £5 CERUSSITE pure intergrown columnar mass lx2xl . (Flux Mine,Pima County, Arizona USA) £6 CHROME...feldspar. (Globe Mine.Petaca District, Rio Arriba County, new Mexico) £15 b) smaller crystal section 1 x | | | Report (issue) | Powder Pattern: Crystal Falls, Iron Co., Michigan, USA. 12.3 (100), 4.16 (100), 2.55 (100), 2.69 (70), 3...sul¯des); quartz, glaucophane, manganoan garnet, albite, epidote, actinolite, chlorite (greenschists)....Mullion Island, The Lizrd, Cornwall, England. In the USA, at the Sterling mine, Antwerp, Je®erson Co., New...Jersey; in the Laytonville quarry, Mendocino Co., and a number of other places in California; at Bald Knob | | | 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...rocks. The range of 6D values of Franciscantype rocks is identical to the -50 to -80 range shown by most...and pyroxene are largely replaced by chlorite, albite and calcite. (c) Conformably above the basaltic...ophiolite sequence. Sur area Fig. 1. Map of California showing locations of sampled areas in the Franciscan | | | 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) | cherts from Andros (Cyclades, Greece) and Laytonville (California, USA). While the metasediments contain significant...Sample Lay-3 is from the quarry in Laytonville (CA, USA, 5 miles south of Laytonville, 3955¢0¢¢N, 12327¢3¢¢W)...minnesotaite, glaucophane, stilpnomelane, phengite, albite and garnet. The Franciscan complex is of Upper... The mineral assemblage (e.g. zussmanite–Laytonville quarry is the only type location) indicates P–T...corresponding to a similar subduction depth as for the Laytonville rocks (ca. 30 km). Analytical procedure The | | | 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...penwithite (= neotocite), 279 and M26 Devon Meldon quarry, Okehampton, greenovite, 172; priceite, 175 Ramsley...Cannington Park quarry, djurlei'te, I72 Combe Farm quarry, Henbury, wulfenite, 298 Merehead quarry, Shepton...emeleusite, riebeckite, nordite, aegifine, narsarsukite, albite, 3I Klokken, Gardar, feldspars, syenite, aplite | | | Journal (article/letter/editorial) | near in Mono from the State described the County. it was questioned from the northern It was...of the species it stands as number The large California and - so 1. number during the of new minerals...desert Twenty region were ciated rocks zone California. miles reported contact trending in from...Charles H. Baines Mineral Research Society of California 152 the Mineralogical Record nace Creek...in the Tick Canyon borate deposit of Los Angeles County. Neocolemanite was found to be identical with colemanite | | | Journal (article/letter/editorial) | pJnoxenesbased on a pressureof breakdown of pure albite to jadeite f quartz of 16.7kb at 600"c and of 14...5kbar at s00'c. rf there is solubility of iron-albite in albite at 600"C,it is probably lessthan 4 to S mol...more jadeite component if they equilibrated with albite and nepheline. For the silica-saturated case, acmitic...environments.Acmitic pyroxenes co-existing with albite and quartz might be used as a pressure indicator...aratus. Location of the field boundary in this range may serlreas a test for the ideality of the jadeite-acmite | | | 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 | | | 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... 3 X 3 $2.75, 4 X 5 $4.50 San Benito County, California - Greenish hexagonal plates (look like thick | | 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) | cherts and meta ironstones in Yugoslavia and California, respectively. In Japan, taneyamalite (Tn), a...minor amounts of titanite, clinopyroxene, phengite, albite, apatite, pumpellyite, and iron sulfides. The peak...opaque minerals (Fig. 2). Chlorite, white mica, and albite, which are dominant phases in low grade metasiliceous... 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 | | | Journal (article/letter/editorial) | of Cuprobismutite (Hillebrand, 1884) from Park County, Colorado, and on specimens from Nordmark, Sweden...rocks at Sulphur Bank mercury mine, Lake County, California, as compact masses pseudomorphous after plagioclase...Cerargyrite (A. S. Eakle, Bull. Dept. Geol. Univ. California, 1912, vol. 7, p. 1). Cerphosphorhuttonite. A...serpentinite, Fresno and San Benito Counties, California. The composition is near Mgl~Fe~+CO3(OH)e4.2H20...Wyoming, and New Hampshire. Named for Coconino County, Arizona. Compreignacite. J. Protas, 1964. Bull | | | Journal (article/letter/editorial) | ferristilpnomelane. 5: Blueschist facies, Laytonville, California (Muir Wood, 1982); with rhodonite, grunerite...grossular-almandine garnet in gneiss with quartz, microcline, albite, biotite, epidote, hematite, titanite and zircon)...yet. The second problem is that the compositional range observed is also controlled by the thermodynamic...experiments, calderite only appears in a narrow f O2 range around the hematite=magnetite buffer (Lattard and...occurrence in nature of calderitic garnets over a range of P–T conditions, from the blueschist to the granulite | | | Journal (article/letter/editorial) | different eclogites in the Franciscan Complex, California, U.S.A. Chang-Whan Oh and J.G. Liou Department...different eclogites in the Franciscan Complex, California, U.S.A. In: M. Okrusch (Editor), Third International...Conference. Lithos, 25: 41-53. The eclogites in California, U.S.A., have been regarded as tectonic blocks...of 90-130 Ma. However, in Ward Creek, northern California, two different types of eclogites were identified:...petrochemical studies ofmetabasites from Ward Creek in California (Maruyama and Liou, 1988; Oh et al., 1990), we |
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Laytonville Quarry, Laytonville, Coastal Range, Mendocino County, California, USA