 | | Journal (article/letter/editorial) | | alkalic ultramafic rocks in the Coyote Peak diatreme, Humboldt County, California JOHN W. MORGAN,’ GERALD K...Survey, ‘Reston, Virginia 22092, *Menlo Park. California 94025 (Received May 17, 1983: accepted in revisedjorm...contaminated rocks from the Coyote Peak diatreme, northwestern California. These data, combined with Nd...residue provided the source rock from which the Coyote Peak magma was ultimately derived. About 66 m.y. ago...diatreme. INTRODUCI’ION Uncontaminated rocks THE COYOTE PEAK diatreme (260 m X 500 m) is composed of unusual |  | | Report (issue) | | 5.431(4) Z=4 X-ray Powder Pattern: Coyote Peak, California, USA. 5.513 (100), 6.98 (62), 3.403 (43)...Russia; by electron microprobe. (2) Coyote Peak, California, USA; by electron microprobe. (3) KFe2 S3...(Russia); in an alkalic mafic diatreme (Coyote Peak, California, USA); in sodalite syenite xenoliths associated...cubanite, potassic feldspar, nepheline, acmite (Russia); pyrrhotite, nepheline, acmite, analcime, alkalic...alkalic feldspar (Point of Rocks, New Mexico, USA); ussingite, villiaumite, siderenkite, sodalite (Mont Saint-Hilaire |  | | Journal (article/letter/editorial) | | lithic-wackeinclusions within the Coyote Peak diatreme,Humboldt County, California GsRAro K. Cz,c,MANsKEAND SrevEN...Geological Suruey 345 Miilillefield Roail, Menlo Park, California 94025 Absfirct Lithic-wacke inclusions within...within the alkalic ultramafic diatreme at Coyote Peak record a remarkable history of metasomatismand crystal...assemblage,20 km SE of Orick, at Coyote Peak,Humboldt County, California. Rocks comprisingthe diatreme may...9), melilite [(CarFe)rr(CarMg)57(CaNaAl)r r], nepheline (NetrKs2r), perovskite,apamagnetite(TiOz < 7 and |  | | Report (issue) | | 187(2) X-ray Powder Pattern: Magnet Cove, Arkansas, USA; 1M. 3.34 (100), 10.04 (74), 5.01 (44), 1.999 (35)...Greenland. (2) Lovozero massif, Russia. (3) Coyote Peak, California, USA; by electron microprobe, H2 O calculated...polytypes. Mica group. A late-stage mineral in nepheline syenite pegmatites. Association: Quartz, dickite...aegirine, barytolamprophyllite, rasvumite (Coyote Peak, California, USA). Distribution: From Narss^a rssuk,... In the USA, at Magnet Cove, Hot Spring Co., Arkansas, and Coyote Peak, near Orick, Humboldt Co., California |  | | Report (issue) | | = 5.499–5.507 X-ray Powder Pattern: Coyote Peak, California, USA. 6.935 (100), 5.342 (71), 4.556 (41)...26] Total [100.0] [100.02] 100.00 (1) Coyote Peak, California, USA; by electron microprobe, oxygen by difference;...alkalic mafic diatreme (Coyote Peak, California, USA); in pegmatites in nepheline syenite (Lovozero massif...rasvumite, djerfisherite, bartonite (Coyote Peak, California, USA); pyrite, murmanite (Lovozero massif...Russia). Distribution: At Coyote Peak, near Orick, Humboldt Co., California, USA [TL]. From Mt. Alluaiv |  | | Report (issue) | | 20.626(1) Z=2 X-ray Powder Pattern: Coyote Peak, California, USA. 2.998 (100), 5.99 (77), 1.833 (40)...43 100.13 100.00 49.66 39.91 (1) Coyote Peak, California, USA; by electron microprobe, corresponding...magnetite, nepheline, phlogopite. Distribution: Name: From Coyote Peak, near Orick, Humboldt Co., California...California, USA [TL]. For Paul Booth Barton, Jr. (1930– ), ore petrologist with the U.S. Geological Survey...National Museum of Natural History, Washington, D.C., USA, 149498. References: (1) Czamanske, G.K., R.C. Erd |  | | Journal (article/letter/editorial) | | in a mafic, alkalic diatreme at Coyote Peak, Humboldt County, California. Associated v/ith it are the two...The geology and mineralogy of the diatreme at Coyote Peak have been briefly described by Czamanskeet al...in several representativepolished sectionsof Coyote Peak material; they defied analysis and identification...silicates--phlogopite,schorlomite,acmite, clinopyroxene, nepheline, natrolite, and sodalitethat comprisethe host...ARL EMx-sMelectron microprobe at Menlo Park, California. (Analytical details are noted in the footnote |  | | Journal (article/letter/editorial) | | samples from a mafic alkalic diatreme at Coyote Peak, California, prompted an attempt to date these materials...discovered in 1976 at Coyote Peak, approximately 42 km north of Arcata, northern California. The diatreme contains...clinopyroxene (Di79Hd21); phlogopite (Mg/Mg + Fe ~ 0.85); nepheline; melilite; acmite; and zoned garnet (melanite...o f ( l ) zeolites and acmite, or (2) coarse nepheline, phlogopite, schorlomite, and sulfides. These...bartonite, which was discovered at Coyote Peak, northern California (G.K. Czamanske, R.C. Erd and J.R |  | | Journal (article/letter/editorial) | | system studied by the dry synthesis method in the range of 300–600 °C and at a pressure of 1 bar. At the...experiments also outline the compositional stability range of the copper-free analog of murunskite ( KxFe2−yS2)...in the K–Fe–S system in KFeS2–Fe–S composition range at 300–600 °C, determine the fields of phase stability...lines show the studied KFeS2–Fe–S composition range of the system. Gray field covers hypothetical K...2003). Along with the “usual” bartonite in the Coyote Peak rocks, Czamanske et al. (1981) found its analog |  | | Journal (article/letter/editorial) | | JOAN R. CIENT U.S. Geological Survey Menlo Park, California 94025 Abstract The new mineral erdite, NaFeS...in a maflc, alkalic diatreme at Coyote Peak, Humboldt County, California. Crystallization of erdite, the...geologic studies of the Redwood Creek area, Humboldt County, California, in 1976, the bizarre, pitted weathering...and forms the ridge-top protuberance called Coyote Peak. Subsequent chemical and mineralogic studies...crystals (each to 5 mm across), clinopyroxene, nepheline, natrolite, sodalite, vishnevite, acmite, apatite |  | | Journal (article/letter/editorial) | | identified in the Bratthagen nepheline syenite pegmatite (Vestfold County, Norway). With respect to the...The sample is from the nepheline syenite pegmatite at Bratthagen, Vestfold County, Norway, an historical...in 1978 by Roy Kristiansen in the Bratthagen nepheline syenite pegmatite of the Larvik Plutonic complex...10º00’39’’ E) in Lågendalen, Hedrum, Vestfold County, Norway. The locality has been protected by law...a trachytoid nepheline syenite dyke in which there are several cross-cutting nepheline syenite pegmatites |  | | Journal (article/letter/editorial) | | http://petrology.oxfordjournals.org/ at University of California, San Francisco on December 13, 2014 Geology...http://petrology.oxfordjournals.org/ at University of California, San Francisco on December 13, 2014 TABLE 1...the type alnoites of Alno (Sweden) grade into a range of melilite-free variants (Table 2). 'Ultramafic...http://petrology.oxfordjournals.org/ at University of California, San Francisco on December 13, 2014 Per cent...http://petrology.oxfordjournals.org/ at University of California, San Francisco on December 13, 2014 TABLE 2 |  | | Report (issue) | | (Lovozero massif, Russia). Association: Aegirine, nepheline, potassic feldspar, cancrinite, apatite (Lovozero...district, Germany. From Coyote Peak, near Orick, Humboldt Co., California, USA. In the Gardiner complex |  | | Journal (article/letter/editorial) | | Although camptonite dykes are dominant, intrusives range from ouachitite, through sodalite tinguaite and...and trachyte to carbonatite. Carbonatites in turn range from calcite-rich types through ankerite- and siderite-...associated with tinguaite, as well as carbonatites which range from calcitic to sideritic varieties. Taeniolite...KLiMgzSi40~o(F,OH)z, It was first described from nepheline syenite pegmatites of the Narsarsuk alkaline complex...clot in a mafic, alkaline diatreme at Coyote Peak, California (Erd et al., 1983), and in metasomatites |  | Yakovenchuk, V. N., Pakhomovsky, Y. A., Men'shikov, Y. P., Ivanyuk, G. Yu., Krivovichev, S. V., Burns, P. C. (2003) Chlorbartonite, K6Fe24S26(Cl,S), a new mineral species from a hydrothermal vein in the Khibina massif, Kola Peninsula, Russia: Description and crystal structure. The Canadian Mineralogist, 41 (2) 503-511 doi:10.2113/gscanmin.41.2.503 | Journal (article/letter/editorial) | | by Czamanske et al. (1981) from Coyote Peak, Humboldt County, California. Among the minerals associated...at Mount Koashva, within the Koashva apatite–nepheline deposit of the Khibina massif. The ore zone of...the deposit, near the contact between apatite– nepheline rocks and urtite. The chlorbartonite-bearing microcline...et al. 1999) located within the host apatite–nepheline rocks (Fig. 1, zone 1). The marginal zone (Fig...of a “giant-grained” aggregate of microcline, nepheline and sodalite, and aggregates of dark red villiaumite |  | | Journal (article/letter/editorial) | | minerals are a large group that covers a considerable range of compositions, many of which form continuous solid-solution...(manganoan) varieties are found at the Harding mine, Taos County, New Mexico (Jahns and Ewing 1977). Fuchsite is...localities. At the Stewart pegmatite in Pala, California, compact lepidolite masses containing small,...are found at the Little Three mine near Ramona, California, associated with orange spessartine and white...and fluorite. A classic association from El Paso County, Colorado, is well-crystallized zinnwaldite with |  | | Journal (issue) | | an uncommon lithium-mica from Coyote Peak, Humboldt County, California ................................tour of the mineral facilities at the Los Angeles County Museum of Natural History (where Tony is curator)...Itatiaia, Brazil Morganite on Tourmaline Pala, California Rubellite Itatiaia, Brazil A UNIQUE OPPORTUNITY...allowed. GEOLOGY The quarry lies in Washington County between the Cincinnati Arch to the east and the...the Illinois Basin to the west. The rocks of the county are generally dipping to the west-southwest toward |  | | Journal (article/letter/editorial) | | Oregon (TAUBENECK, 1979). and three northern California basalts of similar age, were analyzed. Stratigraphic...197X). Grande Ronde samples span a considerable range in both strati~raphic and geographic position. Samples...include flows of olivme basalt, andesite and nepheline normative basalt (TAUBENECK, 1979). Sample F-2...andesite flows in localized areas are flows of nepheline normative basalt, which are represented by sample...samples of Tertiary maftc rocks from northern California were measured. These include a sample of the |  | | Journal (issue) | | coated with some variable "crud" minerals that range from bright greenish duftite stains to yellowish...articles on gold producing areas cover Arizona, California, Nevada, and South Africa. Also, a note on the...gold. Major areas covered include Southeast USA, California, Australia, Canada to Alaska, Britain, and...nine-pound garnet and a 34-carat diamond - all from the USA ? Maybe you're more interested in Czech opals, minerals...15840 East Alta Vista Way, San Jose, CA 95127-1737 USA. CD V-700 GEIGER COUNTER Complete with probe, meter |  | | Journal (article/letter/editorial) | | localities Abbreviations: (Dst.) district, area; (Co.) county; (m.) mine; (Mf.) massif; (Q.) quarry; (N) north...(43°53`N, 103°25`W), Pennington Co., South Dakota, USA \\1974perloffite;…1984sinkankasite 8 – Big Creek...Trimmer (36°54`N, 119°17 `W), Fresno Co., California, USA \\1965fresnoite; …2001kampfite 4 – Big Fish...\(31°26`N, 109°55`W) (area), Cochise Co., Arizona, USA \\1891paramelaconite;…1983henryite 22 – Black Hills...103°25`W); Pennington\ Custer Co., South Dakota, USA \\1891griphite;…1989pararobertsite 7 – Bon Accord |  | | Journal (article/letter/editorial) | | formation of caliche in soifs of the Mojave Desert, California 57 J. R. BUDAHNand R. A. SCHMITT:Petrogenetic...isotopic concentrations in the sea off Southern California 153 KOIUI HAYASEand HIROYUKITSUBOTA:Sedimentary...in . oils and rocks of the Monterey Formation, California 271 D. ELTHONand J. F. CASEY: The very depleted...alkalic ultramafic rocks in the Coyote Peak diatreme, Humboldt County, California 149 STEVENJ. FRITZ and CRAIGD...petrogenesis of lamproites, Late Cretaceous Age, Woodson County, Kansas, U.S.A. . 1383 JOHN R. FARVERand BRXJNO |  | | Journal (article/letter/editorial) | | 2003), alkali-rich volcanic rocks at Coyote Peak, California, and Point of Rocks, New Mexico (Czamanske...Rasvumite from the alkali-rich ultramafic rocks of Coyote Peak and the skarns of Norway is nearly stoichiometric...coexist in the alkaline ultramafic rocks of Coyote Peak, California, and the hyperagpaitic rocks of Mt. Koashva...carbonate clasts; 4: ussingite vein in peralkaline nepheline syenite, Lovozero alkaline complex, Russia (sample...(Chakhmouradian et al. 2007), 6: marble xenoliths in nepheline syenite (0.4–0.5 wt.% Cs 2O), 7: inclusions in |  | | Journal (article/letter/editorial) | | finegrained aphyric rock, composed mainly of sanidine, nepheline, and aegirine with minor haüyne, leucite, monazite...prisms. Crystals are vitreous and transparent and range in color from beige, beige-yellow, light lemon yellow...intrusive complex consists NEW MINERAL NAMES of nepheline and sodalite syenites, with associated alkaline...gray in color, and composed of phenocrysts of nepheline in a trachytic matrix of sanidine, aegirine and...uniaxial negative, exhibits sharp extinction and a range of refractive indices [ω = 1.696–1.714(4), ε = 1 |  | | Book (edition) | | OX5 1 GB, UK 225 Wyman Street, Waltham, MA 02451, USA Copyright © 2015, 2008 Elsevier B.V. All rights reserved...Series A compositional series is defined as a range of mineral compositions in which, for instance,...minimum/maximum values are provided, they show the range found for different optical axes in cases of optical...mineral section. All minerals of a particular colour range are sorted according to their average reflectance...Bullfrog Mine, Bullfrog District, Nye Co., Nevada, USA (sample: Witzke); PPL If marked in description, ▼ |  | | Book | | are an increasingly important source of a wide range of industrial raw materials, which has stimulated...amphiboles'. The rocks included are, therefore, the nepheline syenites (phonolites) and ijolites (nephelin...instance, containing normative but not moda.l nepheline, are excluded. However, sometimes these rocks...rocks contain such a high proportion of normative nepheline that it must be present as an occult phase in...only an approximate coordinate can be given. A range of coordinates is quoted for particularly large |
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