 | | 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...sediments in the metamorphic history, howieite, riebeckite, stil- there are quartzites containing spherical...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 |  | | Journal (article/letter/editorial) | | formula of Fe~-Fe3+Si~zO4o(OHho there are a limited range of substitutions: Ti and V for Fe 3Ā§ and Mn on the...deerite-forming reactions involve the breakdown of riebeckite and the hydrous incompatibility of magnetite... 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) |  | | Report (issue) | | 9.564(9) X-ray Powder Pattern: Laytonville district, California, USA. (ICDD 19-421). 9.03 (100), 3.01...46] [96.36] 100.00 4.19 (1) Laytonville district, California, USA. (2) Do.; by electron microprobe...Howieite, zussmanite, stilpnomelane, spessartine, riebeckite, quartz, aegirine, grunerite, aragonite, manganoan...kutnohorite (Laytonville district, California, USA). Distribution: In the USA, in California, in the Laytonville...Laytonville quarry, at Covelo, and at Burn's Flats, Mendocino Co.; at Ward Creek, Cazadero, Sonoma Co.; |  | | 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...assemblage that includes stilpnomelane, spessartine, riebeckite, crocidolite, quartz, aegirine, grunerite, and...aragonite (Agrell, Bown, and McKie 1964). The Laytonville quarry exotic block represents a series of deep-ocean |  | | Report (issue) | | c = 9.589(4) X-ray Powder Pattern: Laytonville, California, USA. (ICDD 19-571). 9.18 (100), 7.91 (80)...(40), 3.06 (35) Chemistry: (1) Laytonville district, California, USA; analysis not given, stated 3+ to...limestones of the Franciscan Formation (Laytonville district, California, USA). Association: Deerite, zussmanite...zussmanite, stilpnomelane, spessartine, riebeckite, quartz, aegirine, grunerite, aragonite, manganoan siderite...kutnohorite (Laytonville district, California, USA). Distribution: In the USA, in California, from the Laytonville |  | | Journal (article/letter/editorial) | | at only one locality: the Laytonville Quarry, Mendocino County, California. There are, however, present...similarities are demonstrated within two rocks from the quarry in which a manganese concentration gradient has...leached of potassium. As minnesotaite is more of a range of compositions than a structure (there is mounting...simple talcanalogue) a consideration of the Laytonville manganoan minnesotaite as a zussmanite mineral...very flexible, and capable of fitting with a wide range of octahedral layer sizes. Such problems of compatibility |  | | Report (issue) | | 69(2) Z=3 X-ray Powder Pattern: Laytonville district, California, USA. (ICDD 19-1500). 9.60 (100), 4.78...Deerite, howieite, stilpnomelane, spessartine, riebeckite, quartz, aegirine, grunerite, aragonite, manganoan...graphite. Distribution: In the Laytonville quarry, Mendocino Co., California, USA. Name: For Jack Zussman...National Museum of Natural History, Washington, D.C., USA, 109454; The Natural History Museum, London, England...from the Franciscan of the Laytonville District, Mendocino Co., California. MSA meeting, Bozeman, Montana |  | | Journal (article/letter/editorial) | | compositions covering the whole plane stable: (i) pure riebeckite exists under low-P conditions but breaks down...blneschisttemperatures with almandine garnet; (iii) magnesio-riebeckite is stable at high-T and low-P but within the...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 |  | | 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...quartz, green chloromelanite (di~0ac40jd20), and riebeckite. Minor amounts of almandine garnets (up to 5...assemblage: q u a r t z - chloromelanite deerite - riebeckite - magnetite - almandine garnet - (apatite - calcite)...revealed approximately 0.5 wt% impurities, mainly riebeckite and hematitedeerite intergrowths. Chemical and |  | | Journal (article/letter/editorial) | | MĆ©langes of the Franciscan Complex, Diablo Range and Northern California: An Analysis and Review Loren A. Raymond...Cotati Ave, Rohnert Park, CA 94928, USA; raymondla@bellsouth.net Coast Range Geological Mapping Institute,... 3327 Cypress Way, Santa Rosa, CA 95405, USA Received: 5 July 2019; Accepted: 22 July 2019; Published:... Abstract: The Franciscan Complex of California is characterized in part by the presence of mĆ©langes...Complex 1. Introduction The Franciscan Complex of California and southwestern Oregon (Figure 1) is widely |  | | 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) | | 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...Franciscan formation Deerite, stilpnomelane, riebeckite, quartz, aegirine, + garnet, aragonite (partly...(hematite) Ernst (1965) 3. San LuisPacheco Pass, California, USA as in 2. Deerite (rare accessory), quartz |  | | Catalog/List | | A.JOITE CRYSTALS New Cornelia mine, Ajo, Pima County, Arizona. Hydrated copper aluminum silicate. New...CHALCOPYRITE CRYSTALS on SPHALERITE XLS Ā° 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...AZURITE Crystals Piedmont Mine, Bloody Basin, Yavapai County, Arizona. Hydrated copper silicate. Sharp greenish/blue |  | | Journal (article/letter/editorial) | | arrival. CALIFORNIAāIn 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) | | cherts from Andros (Cyclades, Greece) and Laytonville (California, USA). While the metasediments contain signiļ¬cant...Sample Lay-3 is from the quarry in Laytonville (CA, USA, 5 miles south of Laytonville, 3955Ā¢0Ā¢Ā¢N, 12327Ā¢3Ā¢Ā¢W)...Franciscan complex and mainly contains zussmanite, riebeckite, quartz, pumpellyite, minnesotaite, glaucophane... The mineral assemblage (e.g. zussmaniteāLaytonville quarry is the only type location) indicates PāT...corresponding to a similar subduction depth as for the Laytonville rocks (ca. 30 km). Analytical procedure The |  | | Journal (article/letter/editorial) | | INDEX Ecton, Staffordshire, serpierite, 882. Mells quarry, Frome, Somerset, calcite, 70. Roughten Gill, Cumberland...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,...schorlomite, 775. Sultan Hamud, Maehakos district, riebeckite, 1164. Uganda Ankole, schorlomite, 775. Budeda |  | | 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...ophiolite sequence. Sur area Fig. 1. Map of California showing locations of sampled areas in the Franciscan...west-central California from latitude 35āN to 41āN (Fig. 1). The wide latitudinal range of samples is |  | | 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...clinohumite, 99 Igdlutalik, Julianhdb, emeleusite, riebeckite, nordite, aegifine, narsarsukite, albite, 3I |  | Grevel, C., Maresch, W. V., Stanek, K.-P., Grafe, F., Hoernes, S. (2006) Petrology and geodynamic significance of deerite-bearing metaquartzites from the Escambray Massif, Cuba. Mineralogical Magazine, 70 (5) 545-564 doi:10.1180/0026461067050349 | Journal (article/letter/editorial) | | Cuba, in the assemblage deerite + Mg-Al-poor riebeckite + magnetite + quartz > garnet > phengite > aegirine...stress-free annealing of the quartz matrix. Mg-Al-poor riebeckite overgrows older, large, oriented crystals of...glaucophane, ferroglaucophane and Mg-Al-rich riebeckite (ācrossiteā) during deerite formation. Early-formed...al. (1965) from the famous Laytonville quarry, Mendocino County, California. Since then, deerite has been...the Western Cordillera of North America from California to the State of Washington. Lattard and Le Breton |  | 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) | | associated with Mn rich stilpnomelane (Mn stp), riebeckite, lawsonite, aegirine, calcite, quartz, and opaque...cherts and meta ironstones in Yugoslavia and California, respectively. In Japan, taneyamalite (Tn), a... assuming all iron as FeO, shows a composition range of (K0.18ā0.54Na0.06ā0.15 Ba 0.06ā0.12Ca 0.04ā0...Sodic amphibole in the sample containing Hw is riebeckite [Fe3+/(Fe3+ + Al) = 0.73 0.76 and Fe2+/(Fe2+...and scarce amounts of lawsonite (~ 4 vol%) and riebeckite (~ 4 vol%). Rocks from Shikoku containing Hw |  | | Journal (article/letter/editorial) | | blue amphibole is zoned from crossite core to riebeckite rim. The bulk chemical analysis of the rock is...Fig. 1. Location of the Santo Pietro Di Cotone quarry on a structural sketch map of eastern Corsica (After...SAMPLE DESCRIPTION The deerite rock crops out in a quarry near the eastern margin of the Corsican āschistes...(Caron et al., 1981). The rocks observed in the quarry (marbles, gneisses, metabasites, quartzites) all...compositional variation from a crossite core to a riebeckite rim (Fig. 4).An example of the zoning profile |  | | Journal (article/letter/editorial) | | that the peak mineral assemblage (glaucophane/riebeckite + epidote + phengite + albite + quartz + chlorite)...the solid amphibole is ferro-glaucophane and/or riebeckite (Leake et al., 1997). In AK04, the larger sodic...stilpnomelane from rocks at the Laytonville Quarry, Mendocino County, California (Wood, 1982). K may be replaced...PāT pseudosections were calculated for the PāT range 5ā11 kbar and 300ā500 Ā°C. Both pseudosections are...Chlorite and riebeckite are stable throughout the pseudosection. Glaucophane and riebeckite coexist at |  | | Journal (article/letter/editorial) | | evidence for the siting of lithium ions in a riebeckite, 743; The oxidation of Bolivian crocidolite,...rltungameteorite, metallography, 1139. Aroostook County, Maine, ganophyllite, 893. Arrojadite, Rhodesia...Singhbhum, India, 671. Big Creek, Fresno County, California, celsian, 914. BIGGAR (G. M.), Apatite compositions...of pyrope from the Stockdale kimberlite, Riley County, Kansas, 450. BROUSSE (R.), see LEMAITRE(0.), xxviii...Antrim, ferrian chlorospinel, 948. Castle an Dinas quarry, Cornwall, tourmaline, 1078. Catron City, New Mexico |  | | Journal (article/letter/editorial) | | cummingtonite, gedrite, hornblende, pargasite, riebeckite Amphibole Subcommittee of the I.M.A. report,...gr., X-ray, I79 Bali Low copper mine, Capricorn Range, W. Australia, lavendulan, 369 BaUyclare, Co. Antrim...geochemistry of loveringite, 187 Cannington Park quarry, Somerset, djurleite, 172; durangite, 172; milarite... see EGGLETON (R. A.), 361 and M37 Cheesewring quarry, Linkinhorne, Cornwall, danburite, I7I Chernovite...anal., M [ 3; and see Augite, Diopside Coast Range, California, stilpnomelane, 36I and M37 Cobaltite, I.R |  | | Journal (article/letter/editorial) | | aratus. Location of the field boundary in this range may serlreas a test for the ideality of the jadeite-acmite...albite transition is believedto take place over the range 500-700"C (Hlabse and Kleppa, 1968;Boettcherand...vesselsis generally consideredto be in the Ni-NiO range. Bailey (1969) has shown that acmite is stable in...oxygen fugacities above the magnetite-wtistite range. In any c&se,no differences were noted between bufiered...as calculated by the program. In the 500-600oC range, runs of 7-10 days showed almost complete reaction |
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Laytonville Quarry, Laytonville, Coastal Range, Mendocino County, California, USA