 | | Catalog/List | | Few of the minute crystals you see on mine or quarry dumps or even on cabinet specimens will be satisfactory...at the pristine source underground ar an fresh quarry faces and the like. Very aften though, such source...malachite. About 2-3 nm. BABINGT(}IITE, Goose Creek Quarry near Leesburg, Virginia. Sharp, blad< crystals...Small specimens. 132 BIOTITE, Laacher See, Rhineland, Germany. Sharp prismatic crystals 1tith nosean crystals...CHALCOPYRITE, Dreislar, near Medebach, Westphalia, Germany. Sphenoidal crystals on barlte crystals an crystalline |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...fibrous sphalerite from Diepenlinchen, near Aachen, Germany. PLATE Vo I~ .·• / ~1 rhyolite 37 r . ...chalcopyrite from Herdorf, Siegerland, Germany. Center. Pyrrhotite. Harzburg, Germany. Below Massive chakopyrite...porphyry feldspars (Na, Ca) diorite hornblende andesite *porphyry dioriteporphyry dioriteaplite feldspar...siderite and calcite crystals. Clausthal, Harz Mts., Germany. PLATE 5 • • 4J animals (bitumen, oil) has |  | | Journal (article/letter/editorial) | | Mg-chloritoid(8 wt %), talc (5 wt %), and zoisite-clinozoisite(2 wt %) in basalticrocks;and lawsonite,zoisiteclinozoisite...onswith steeppositivedP/dT slopesto zoisite-clinozoisite (until 3.0- 3.2 GPa), and at higherpressures...respectively.On the contrary,the breakdownof zoisite-clinozoisite is mainly pressuresensitive.Phengiterepresents...largeststabilityfield encountered in this study.In andesite,phengiteis stableto morethan7.7 GPa andmorethan920øC...et al., 1994] constrain conditions for possible Germany. processesoccurring at the boundary between subducted |  | | Journal (article/letter/editorial) | | Rohstoffe, P.O. Box 510153, D-30631 Hannover, Germany Abstract The Falémé iron district in the Kedougou-Kéniéba...igneous magnetite in granodiorite and magnetite in andesite (possibly of igneous origin) by low concentrations...than unaltered granodiorite and weakly altered andesite in the area (avg ~7% Fe2O3(total)). Iron was probably...alteration of granodiorite and small areal extent of andesite argue against a granodioritic or andesitic source...Koudekourou West Siliciclastic rocks, schists Andesite 11°50'W Rhyolite Boto Tonalite 143 FIG. 1. Geology |  | | Journal (article/letter/editorial) | | represented by the Aggeneys Hills. One of these, the Quarry fold nappe, contains sections through a distinctive...Koeris Formation that was mapped in detail in the Quarry fold nappe, is 220m thick and is interpreted to...attention will be focused on one of the nappes, the Quarry fold nappe (Figure 2), where the stratigraphy is...of the metavolcanic succession revealed in the Quarry fold nappe (correlated with the Koeris Formation...successions of structurally constrained units The Quarry fold nappe consists of a concordant sequence of |  | Ames, D. E., Galley, A. G., Kjarsgaard, I. M., Tardif, N., Taylor, B. E. (2016) Hanging-Wall Vectoring for Buried Volcanogenic Massive Sulfide Deposits, Paleoproterozoic Flin Flon Mining Camp, Manitoba, Canada. Economic Geology, 111 (4) 963-1000 doi:10.2113/econgeo.111.4.963 | Journal (article/letter/editorial) | | distribution of Fe- and Mg-rich chlorite, epidote-clinozoisite, biotite-annite, actinolite-hornblende-ferrotschermakite...Hidden Formation consists of tholeiitic basaltic andesite flows, with subordinate shallowly emplaced Fe-Ti...felsic volcanic rocks Hidden formation Basaltic andesite flows with minor interflow sedimentary rocks 1920...1920 unit and other Fe-Ti-P basaltic andesite (1-5 localities, see text) Flin Flon formation Massive...pillowed, aphyric to plagioclase-phyric basaltic andesite flows (Fig. 5a, b), with characteristic, finely |  | | Report (issue) | | ................................... 16 Meta-andesite breccia............................. Purple slate...Metarhyolite tuff................................. Meta-andesite flow and tuff....................... Green slate................................. Iron King neta-andesite................................. Distribution...Chlorite-sericite-albite-quarts-carbonate meta-andesite tuff............................ 16 19 20 21...25 25 29 30 Hornblende-oligoclase-epidote-meta-andesite tuff........................................ |  | | Report (volume) | | breccia___________________________ 7. Porphyritic andesite flow intertonguing with Spud Mountain breccia...rocks are on the border between the basalt and the andesite fields. TABLE 1.-Chem£cal analyses of rocks £n...Granular sphene, black opaque granules, epidote and clinozoisite, and apatite are present. Chemical analyses...many angular clasts of rhyolite and porphyritic andesite, and the upper unit consists largely of bedded...type forming clasts in the breccia is porphyritic andesite containing saussuritized plagioclase phenocrysts |  | Schardt, C., Cooke, D. R., Gemmell, J. B., Large, R. R. (2001) Geochemical Modeling of the Zoned Footwall Alteration Pipe,Hellyer Volcanic-Hosted Massive Sulfide Deposit, Western Tasmania,Australia. Economic Geology, 96 (5) 1037-1054 doi:10.2113/gsecongeo.96.5.1037 | Journal (article/letter/editorial) | | für Geologie, B.-v.-Cottastr. 2, 09596 Freiberg, Germany DAVID R. COOKE, J. BRUCE GEMMELL, AND ROSS R....sericite-rich zone, and finally grading out to unaltered andesite. These mineralogical changes relate to a gradual...reaction of a hydrothermal fluid with a typical andesite of the Que-Hellyer Volcanics, which forms the...representative whole-rock analysis of the least altered andesite used in our calculations (Table 3) is taken from...from Gemmell and Large (1992). The unaltered andesite is titrated into the initial fluid incrementally |  | | Journal (article/letter/editorial) | | ,actinolite,plagioclase(An•.2_a•.),diopside,clinozoisite,sphene, chlorapatite,marialitic scapolite,tourmaline...from which Early Cretaceous(Neocomian) marine andesite the correspondingthin sectionhad been cut. The...minor west sideof Cord6nLa Liga. magnetite, clinozoisite,and sphene (Table 1). The Outside the intensely...percent of is somewhat less calcic than that of the andesite zonedplagioclase phenocrysts(1-3 mm An54-a8)in...oundmasscomposed augite and ihnenite than the andesite porphyry of primary plagioclase, augite, hornblende |  | | Book | | manganese oxide on limestone, Solnhofen, Bavaria, Germany * 11.5 x 24 x 0.5 om MINERALS: PRODUCTS OF A... Europe: Cornwall, England; Rheinland-Pfalz, Germany. Asia: Yekaterinburg (Sverdlovsk), Ural Mountains...rocks. Arsenic, Sankt Andreasberg, Lower Saxony, Germany * 5 x 7 x 1 cm Wyoming; salt deposits in Louisiana...Wolfsburg and Sankt Andreasberg, Lower Saxony, Germany. Asia: Akatani Mine, Japan. Sulfur, Cianciana...very rare in nuggets and even Passau, Bavaria, Germany; Piedmont, Italy. indicates that it is composed |  | | Journal (article/letter/editorial) | | mass change calculations from the granitoid and andesite toward the skarn zone indicate that there is considerable...g/100 g in granitoid and a gain of 8 g/100 g in andesite. Fe skarn deposit and skarn occurrence are characterized...Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany DOI: 10.1127/0077-7757/2011/0199 www.schweizerbart...volcano-sedimentary series, comprising andesite, quartz-andesite, basalt and their pyroclastics, dolomitic...volcano-sedimentary series. The volcanics consist of andesite, quartz-andesite, basalt and their pyroclastics, which |  | Nokleberg, W.J., Aleinikoff, J.N., Lange, I.M., Silva, S.R., Miyaoka, R.T., Schwab, C.E., Zehner, R.E., Bond, G.C., Richter, D.H., Smith, T.E., Stout, J.H. (1992) Preliminary geologic map of the Mount Hayes Quadrangle, eastern Alaska Range, Alaska. Open-File Report Vol. 1992 (92-594) US Geological Survey doi:10.3133/ofr92594 | Report (issue) | | to sericite; biotite to chlorite plus epidote-clinozoisite. Local quartz and calcite veins. Unit widely...calcite; mafic minerals to chlorite and epidote-clinozoisite. Unit occurs in: (1) a small stock approximately...Creek Glacier subterrane; locally intruded by andesite and granite dikes up to 1 m wide. A Late Cretaceous...subterrane; intruded by granite, rhyolite, dacite, and andesite dikes approximately 1 m wide. A Late Cretaceous...epidoteamphibolite facies minerals are epidote-clinozoisite, biotite, and garnet. Diagnostic amphibolite |  | | Journal (article/letter/editorial) | | rocks – An example from the Bayerischer Wald, Germany Giselher Propach, München With 4 figures and 1...rocks – An example from the Bayerischer Wald, Germany. – N. Jb. Miner. Mh. 2002 (9): 424 – 432; Stuttgart...compositions of the dike rocks range from basaltic andesite to rhyolite. The uniform strike and dip of the...Less abundant are albite, allanite, anhydrite, clinozoisite, hydrogarnet, white mica, microcline, prehnite...(chlorite, epidote, pumpellyite) and basaltic andesite (prehnite). Fe2 + / (Fe2 + + Fe3 + ) was assumed |  | | Book (edition) | | gratitude to Prof. Dr. Hermann Bank, Idar-Oberstein/ Germany, for making many rare collector gemstones available...thank Mr. Hans Walter Lorenz, Idar- Oberstein/Germany, who cut numerous rare gemstones specifically for...Precious Stones, Gemstones, Pearls and Corals (for Germany) to protect against unfair competition. Permitted...Clinochlore Clinochrysotile Clinoenstatite Clinohumite Clinozoisite Colemanite Creedite Crocoite Cryolite Datolite...Magnesio-Axinite 6 % Nambulite Vesuvianite Cassiterite Clinozoisite Epidote Hancockite Pyrolusite Sogdianite NNSas |  | | Journal (article/letter/editorial) | | [Taken as read 28 May 1964] Summary. Epidote and clinozoisite are widely distributed in the andesitic lavas...veins ; clinozoisite is found with epidote in the other types of occurrence. Epidote and clinozoisite formed...formed up to 600 ~ C at about 2000 kg/cm 2. Clinozoisite crystallized to. gether with epidote in the...the vesicles, demonstrating a gap in the clinozoisite~pidote solid solution series. Early formed epidote...Knotts rock is a coarsely porphyritic plagioclase-andesite, in which cavities have been filled by epidote |  | | Report (issue) | | the Mio-Pliocene Mehrten formation consisting of andesite tuffs, breccias, sands, gravels, and boulder beds...writer has differentiated another forma- by meta-andesite, amphibolite, horn- represented blende-schist...is confined to the Blue Several thin sills of andesite are in- trusive into this formation. These intrusions...Meta-andesite occurs as sills in the Blue Canyon formation and resembles closely the meta-andesite of the...mineral is constituting the rock are epidote, clinozoisite, iron ore, and leucoxene. Locally, the hornblende |  | | Report (issue) | | Photomicrographs of lithic tuff. 2. Greenstone altered from andesite lithic tuff _____________________________ _ 3...domes of clinozoisite___ _ __ 37. Micrographic clinozoisite porphyroblasts ___________________________ ..._ 67. Schematic representation of members ·of andesite-keratophyre association as indicated by weight-percents..._______________________ _ 70. Distribution of epidote, clinozoisite, and muscovite in metamorphic rocks of northwestern...agglomerates with the compositions of basalt, andesite, dacite, and their al·bitized equivalents spilite |  | Makovicky, Emil, Frei, Robert, Karup-Møller, Sven, Bailey, John C. (2016) Imperial Porphyry from Gebel Abu Dokhan, the Red Sea Mountains, Egypt Part I. Mineralogy, petrology and occurrence. Neues Jahrbuch f??r Mineralogie - Abhandlungen: Journal of Mineralogy and Geoche, 193 (1) 1-27 doi:10.1127/njma/2015/0289 | Journal (article/letter/editorial) | | Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany DOI: 10.1127/njma/2015/0289 www.schweizerbart...belong, are a subaerial sequence ranging from andesite to dacite, locally rhyolite, and composed of lavas...9 Ma for, respectively, a red quartz andesite and a grey andesite from the locality of Imperial Porphyry...the Imperial Porphyry grades into dark ‘Dokhan andesite’. The porphyry forms a sheet which is 30 – 50...describe the Imperial Porphyry as a variety of quartz andesite, containing piemontite (as a source of red colour) |  | | Report (issue) | | open-file report (with the exception of map unit Andesite (Kwan) for which new data were not available)...zircon, sphene, and rare allanite; epidote and clinozoisite can be found as individual grains; CM-27 is...moderately altered to sericite, chlorite, and clinozoisite, respectively; accessory minerals include opaques...the more altered rocks, calcite, epidote, and clinozoisite are found as individual grains; foliation trends...although, in the more altered rocks, epidote and clinozoisite can be found as individual grains; dark fine-grained |  | Nokleberg, Warren J., Albert, N.R., Bond, G.C., Herzon, P.L., Miyaoka, R.T., Nelson, W.H., Richter, D.H., Smith, T.E., Stout, J.H., Yeend, Warren, Zehner, R.E. (1982) Geologic map of the southern part of Mount Hayes Quadrangle, Alaska. Open-File Report Vol. 1982 (82-52) US Geological Survey doi:10.3133/ofr8252 | Report (issue) | | upper Paleozoic island arc rocks consist mainly of andesite flows, breccia, epiclastic rocks, argillite, and...minor andesite, whereas the upper Paleozoic rocks in the Slana River subterrane are mainly andesite flows...are hornblende, biotite, plagioclase, quartz, clinozoisite, white mica, with lesser garnet, potassium feldspar...are hornblende, biotite, plagioclase, quartz, clinozoisite, white mica, with lesser garnet, potassium feldspar...amphibolite, biotite-garnet schist, hornblende-clinozoisite schist, biotite-white mica-garnet schist, calcite |  | | Journal (article/letter/editorial) | | of rhyolite-dacitic porphyries, and dacitic and andesite-dacitic porphyrites. Lavas of these rocks and...porphyrites have a coarsely porphyritic texture. The andesite-dacitic porphyrites, passing i n places into andesitic...succession) : 1) basaltic, 2) rhyolitedacitic, and 3) andesite-basaltic. Volcanomict sandstones have been found...along with the plagioclase and pyroxene. I n the andesite-dacitic varieties, quartz phenocrysts appear....wide variety of facies and composition of t h e andesite-basaltic sequence, and the frequent predominance |  | | Journal (article/letter/editorial) | | the emplacement of such alteration species as clinozoisite, epidote, and chlorite. Other species, such...sometimes be confused with gold at this locality. Clinozoisite, Ca,Al,(SiO,),(OH), is common on Green Hill...natureit is loaded with clinozoisite and to a lesser extent epidote. The clinozoisite tends to occur as minute...amethyst crystals growing on green druses of clinozoisite at the Babe vein (pre-Alta mining). Other associations...the ubiquitous calcite vein filling. The best clinozoisite-gold associations are in the Zeolite vein, 813 |  | | Journal (article/letter/editorial) | | that solid solution in plagioclase, garnet, and clinozoisite are important variables such that on a 7^00...calcite, wollastonite, diopside, scapolite, clinozoisite, actinolite, quartz, and intermediate to sodic...Bio—biotite, Cc — calcite, Chi—chlorite, Cz«=clinozoisite, Di —diopsidc, D o = dolomite, Fo — forsterite...Yosemite National Park contains coarse blades of clinozoisite (Ps^) intimately intergrown with large wollastonite...by solid solution in plagioclase, garnet, and clinozoisite. Fig. 3 illustrates the effect that solid solution |  | | Journal (article/letter/editorial) | | crystalline quartz, johansennite, K-feldspar, albite, clinozoisite, epidote, and hematite. Petrographic and fluid...and associated johansennite, K-feldspar, and clinozoisite precipitated from fluids at near-quartz saturation...silicate-stage mineral assemblage, quartz + adularia + clinozoisite, in conjunction with fluid homogenization and...range in composition from basaltic andesite to rhyolite with andesite and dacite flows and flow breccias...the vein consist of purple Vizcaina Formation andesite devoid of faults, veins, and the oxidized remnants |
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Andesite quarry, Kreimbach-Kaulbach, Lauterecken-Wolfstein, Kusel, Rhineland-Palatinate, Germany