 | | 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...involving reactions of greenalite or minnesotaite or grunerite with magnetite and quartz. Within the deerite... 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) |  | | 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 |  | | 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...quartz, aegirine, grunerite, aragonite, manganoan siderite, ferroan kutnohorite (Laytonville district, California...California, USA). Distribution: In the USA, in California, in the Laytonville quarry, at Covelo, and at...at Burn's Flats, Mendocino Co.; at Ward Creek, Cazadero, Sonoma Co.; and at Panoche Pass, San Benito Co |  | Massonne, H.-J., Hervé, F., Medenbach, O., Muñoz, V., Willner, A. P. (1998) Zussmanite in ferruginous metasediments from Southern Central Chile. Mineralogical Magazine, 62 (6) 869-876 doi:10.1180/002646198548098 | Journal (article/letter/editorial) | | found only in ironrich metasediments from Laytonville, California (Agrell et al., 1965). A new occurrence...A similar phase was also reported from Laytonville, California (Muir Wood, 1980). The rarity of rock-forming...Agrell et al. (1965) from the Laytonville quarry, Mendocino County, California. At this locality these hydrated...(1980) reported further types of zussmanite from Laytonville, which are fine-grained. These H.-J. MASSONNE...metamorphic belts, the metamorphic basement within the coastal ranges of Chile south of 34~ can roughly be divided |  | | 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...quartz, aegirine, grunerite, aragonite, manganoan siderite, ferroan kutnohorite (Laytonville district, California...California, USA). Distribution: In the USA, in California, from the Laytonville quarry, and at Covelo, |  | | 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...stilpnomelane-zussmanite-chlorite-grunerite, stilpnomelane-biotite-chlorite-grunerite, and stilpnomelane-bioti...stilpnomelane-biotitealmandine-grunerite. The stability field is reduced by increasing X(COz) and xx 3 f S t i l and is...of the Franciscan Formation in the Laytonville Quarry, California (e.g., Muir Wood 1982). These rocks |  | | 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...stilpnomelane, spessartine, riebeckite, quartz, aegirine, grunerite, aragonite, manganoan siderite, ferroan kutnohorite...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) | | Cambridge SUMMARY. The mineral howieite has a stability range that extends down to pressures at, or even below...discovered by Agrell at the Laytonville Quarry, Mendocino County, California, and named as such in Agrell...o w i e i t e localities I. Laytonville Quarry, Mendocino Co., California (Agrell et al., I965) 2. Ward...Sonoma Co., California (Coleman and Lee, i966; unpubl.) 3. Panoche Pass, San Benito Co., California (Muir Wood...and Merced Cos., California (Muir Wood, 1977) 5- Covelo, Mendocino Co., California (Muir Wood, I977) |  | | 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...aegirine, grunerite, and aragonite (Agrell, Bown, and McKie 1964). The Laytonville quarry exotic block... France, and by Coleman in 1959 at Cuzadero, California, are all deerite (Muir Wood 1979). (Continues |  | | 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) | | 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);...contain tremolite-actinolite or cummingtonite-grunerite amphiboles. Compositional zoning between such |  | | Report (issue) | | Powder Pattern: Crystal Falls, Iron Co., Michigan, USA. 12.3 (100), 4.16 (100), 2.55 (100), 2.69 (70), 3...hematite, minnesotaite, greenalite, chamosite, grunerite (iron formations); magnetite, chlorite, quartz...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 |  | | Catalog/List | | A.JOITE CRYSTALS New Cornelia mine, Ajo, Pima County, Arizona. Hydrated copper aluminum silicate. New...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...AZURITE Crystals Piedmont Mine, Bloody Basin, Yavapai County, Arizona. Hydrated copper silicate. Sharp greenish/blue |  | | Journal (article/letter/editorial) | | found to be close to unity for the cummingtonite-grunerite series, we shall assume in Lhe calculations of...Mijssbauer spectra of (a) howieite from Laytonville, California. and (b) dmrite and The G. M. BAXCROFT... MM/ spectrum California. mineralogy-11 +3 SEC of crocidolite from Laytonville, 553 554 G....fayalite, the orthoferrosilite M, position and the grunerite (MM,,M,, M3) positions: indicating that high-spin...sapphirines have pleochroic schemes in the blue range, suggesting octahedral Fe2+ ions. However, MCKIE |  | | Journal (article/letter/editorial) | | 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 ‘schistes...(Caron et al., 1981). The rocks observed in the quarry (marbles, gneisses, metabasites, quartzites) all...kbars 393 - !’ 10 I 1.- I I * I t Grunerite LL 600 T ‘C Fig. 8. Comparison of the deerite...1984). Dee: Deerite: Minn: Minnesotaite: Grun: Grunerite; Mt: Magnetite: Fa: Fayalite; Fs: Ferrosilite: |  | | Journal (article/letter/editorial) | | Bolivia, Wittenoom Mine Western Australia and Laytonville California. The Bolivian crocidolite, g+Ozr(OH)2,...measured are shown in Figure 1. Over the Mgz+-p.2+range studied f our prominent peaks A , B , C and D were...24 Wittenoom Gorge, Western Australia Laytonville, California M(2) positions Fe3+ Mgz+ Fe2+ Fe3+...from the Franciscan of the Laytonville District, Mendicino Co , California (Abstr ) Amer. Mineral.,SOt278...Determination of cation distribution in the cummingtonite-grunerite series. Amer. M'ineral.,52' 1009-1026 , aNr R |  | 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) | | 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...temperature ambiguity of only >6ºC in the temperature range of interest. A more pronounced uncertainty arises...critically dependent on a very specific, restricted range of oxygen fugacities close to the quartz-fayalite-magnetite...at the lower end of Grevel’s estimated pressure range. The combination of the deerite stability field and |  | | 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 |  | | Book | | Introduction vi Monticellite 43 Cummingtonite - Grunerite 4 Hornblende 45 46 Perovskite Spinel 88...Scapolite - 0.040 THIRD - 0.045 Cummingtonite-Grunerite - 0.050 Aegirine-Augite ORDER Epidote Fayalite...Specimen from marble. cation x 20. New Jersey, USA, magnifi- Chondrocyte Chondrodite Mg(OH, F)...clinohumite but, since its birefringence is in the same range as that of chondrodite, they can only be distinguished...n A considerable range of compositions is possible in garnets and hence the range of refractive indices |  | | Journal (article/letter/editorial) | | Blueschist facies, Laytonville, California (Muir Wood, 1982); with rhodonite, grunerite, kutnahorite and...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...analyses (4 out of 362) project in the XFe ¼ 0.40–0.65 range and may represent mixed analyses near zone boundaries |  | | Book (volume) | | 01225 442836) Distributors USA AAPG Bookstore PO Box 979 Tulsa OK 74101-0979 USA (Orders: Tel. (918) 584-2555...Holmquistite—Ferro-holmquistite Cummingtonite—Grunerite Calcic Amphiboles Tremolite—Actinolite—Ferro-actinolite...analyses representative, wherever possible, of the range of chemical and paragenetic variation. From most...Minerals, three new minerals from the Laytonville Quarry, California were named by S. O. Agrell after the...The M4 sites however can be octupied by a wider range of cations and their sizes determine the way in |  | | Journal (article/letter/editorial) | | experiments have been performed in the 20-27 kbar range to determine the upper thermal stability limit of...deerite, FeZ+Fe3+[SilzO4o](OH)~o . In this pressure range, the maximum thermal stability limit is represented...conjunction with literature data on coesite, grunerite, minnesotaite, and greenalite, the P-Tstability...upper stability limit, stable only over a narrow range of oxygen fugacities within the magnetite field...obselete breakdown curves of ferrosilite and grunerite (see new data in Koeh-Mfiller et al. 1992; Lattard |  | | Journal (article/letter/editorial) | | described by Agrell et al. (1965) from Laytonville Quarry, California, USA. Since then, occurrences of this...seems to be stable only in a relatively narrow range of fo2 conditions (Lattard and Schreyer, 1981; cf...Green--Greenalite, Minn--Minnesotaite, Grun--Grunerite, Fs--Ferrosilite, Fa--Fayalite, Jd--Jadeite, Qz--Quartz |  | | Journal (article/letter/editorial) | | DISTRICT' THE FRANCISCAN OF THE LAYTONVILLE CO., CALIFORNIA MENDOCINO S. O. Acnrlr,, FROM M. G. BorvN...garnet, riebeckite, crocidolite, qvartz, aegirine, grunerite, aragonite, oligonite and ferroan-kutnahorite...ABSTRACTS SEVEN NEW BARIUM MINERALS FROM FRESNO COUNTY, CALIFORNIA EASTERN CaliJornia Dilision Joux T. Ar...minerals have been found in eastern Fresno County, California. The minerais occur in sanbornite-bearing...ORIGIN OF TINCAI,CONITE AT SEARLES LAKE, CALIFORNIA C. J. Bowsnn, Uni.ztersi,tyoJ Wiscons'in, Madtison |
|
