| | Journal (article/letter/editorial) | footwall ore body records a shift from ferro-hornblende to ferro-tschermakite amphibole. When coupled with...younger Whitewater Group and (1265 Ma) Sudbury diabase dikes, are the only lithologies that can provide...Orogeny was followed by emplacement of the Sudbury diabase dike swarm around 1238 6 5 Ma, associated with...intrusion and subsequent brittle deformation of some diabase dikes (Rousell et al. 1997, Rousell & Brown 2009...(2000–1200 m from the SIC-footwall contact), hornblende hornfels (1100–350 m), and pyroxene hornfels | | | Journal (article/letter/editorial) | vein filling and wall-rock alteration G-14-4 hornblende(1007 Ma). The samplesand were wrappedin aluminumfoil...amphiboleage spectra coresare predominantlymagnesio-hornblende with (Fig. 2) are similarin character.In the...Anomalouslyhigh datesare alsoobtainedfrom the Ferro-hornblende (mg/(mg+ Fe) = 0.48, Ca/K = 33, intermediatesteps(from30-35%...theexception ofthetwostepsfrom3 to 9 percentgas magnesio-hornblende. Two step-heatinganalyses release(whichhave dateslessthan... The slightlyyoungerintegrateddatefor the ferro-hornblende fractions,while not statistically significant | | | Journal (article/letter/editorial) | = brown/olive-brown hornblende; 9= actinolite; 10= green fabric-forming hornblende; 11 = green fabric-forming...fabric-forming actinolitic hornblende; 12=epidote; 13=biotite; 14=titanite; 15=chlorite; FeO = FeOtot~d; n=number...Brown titaniferous magnesio-hornblende (darkgrey) with a green hornblende mantle (medium grey). B. Fibrous...Fibrous actinolite with a partial green hornblende rim (h). Note pseudomorphic preservation ofclinopyroxene...1.0 0.9 59 MAGNESIO-HORNBLENDE ACTINOLITE -$ u.. 0 . 5 _ _ _ 4- --o FERRO-TSCHERMAKITE FERROTSCHERMAKI | | | Journal (article/letter/editorial) | rapakivi batholith consists of quartzporphyritic hornblende rapakivi. This rock contains small amoeboidal...modelling indicates that the quartzporphyritic hornblende rapakivi is a mixture of 15% hi-Fe monzodiorite...Rapakivi Batholiten besteht aus quarzporphyritischem Hornblende Rapakivi. Dieses Gestein enh~ilt kleine Am6boide...Geochemische Modelle zeigen, dab der quarzporphyritische Hornblende-Rapakivi eine Mischung von 15~ eisenreichen Monzodiorit...Subjotnian dolerites Composite dyke Quartz-porphyritic hornblende rapakivi and quartz-feldspar porphyry Fig. 1 | | | Journal (article/letter/editorial) | of the dyke comprises a quartz + plagioclase + hornblende + biotite ? clinopyroxene 2 orthopyroxene assemblage...Offset presumed Huronian Supergroup Nipissing Diabase 0Cartier Granitoids Benny Greenstone Belt ___...sample locatioris for the Hess dyke. PFoy Nipissing diabase, FBrec = Footwall Breccia. Note: eastern end of...Distinct phases of Hess are also recognized. Quartz Diabase is a darker, finer-grained, plagioclase-porphyritic...chilled against the Quartz Diorite. The Quartz Diabase occurs as narrow (2CL40 cm) concordant sheets within | | | Journal (article/letter/editorial) | , sodic (albite, scapolite), and sodic-calcic (ferro-pargasite) alteration. The main syn-tectonic hydrothermal...structure predominates in low strain zones. Sets of diabase and gabbros crosscut all volcanic units and are...biotite (I) crystals, even in undeformed rocks. Diabase dikes crosscut the volcanic and volcaniclastic...partially preserved in diabase (Fig. 6A and 6B). The actinolite (I) has ferro-pargasite rims with strong...by scapolite (Fig. 4M). Interstitial crystals of ferro-pargasite and biotite make up the intergranular | | | Journal (article/letter/editorial) | Braunschweig, D 3300 Braunschweig (Federal Republic of Germany) and HANS KREUZER, WILHELM HARRE Bundesanstalt...Rohstoffe, D 3000 Hannover {Federal Republic of Germany) Received November 2, 1977 Revised version received...dated by the K-Ar method. Two muscovites and one hornblende gave concordant ages of 161.5 ± 1.6 (2or), 162... and 162.6 -+3.4 m.y. respectively while one hornblende gave a slightly discordant date of 169.0 ± 3...The mass is cut by various pyroxenite, gabbro, diabase, and rodingite dikes. The peridotite is in part | | | Journal (article/letter/editorial) | actinolite to ferro-tschermakite and ferro- pargasite, but only four analyses had a ferro-pargasitic composition...composition of primary amphibole is magnesio-hornblende, as revealed by zoned amphibole in quartz diorite...Although the core of this amphibole is magnesio-hornblende, the rim is ferrotschermakite. The composition...ranges between actinolite, ferrotschermakite, and ferro-pargasite. Some of this amphibole may also be zoned...actinolite core and an Ferich, ferro-tschermakitic hornblende or ferro-tschermakite rim (Fig. 7, sample | | | Journal (article/letter/editorial) | whole extent. In Colombia they are known as the Diabase Group, while in Ecuador they were assignedtogether...presently a matter of debate. For the Colombian Diabase Group, settings involving an oceanic island arc...to 4 mm are found as phenocrysts; amphibole (hornblende) is present in some andesites. The groundmass...oxide and less commonly by prehnite and titanite. Hornblende crystals in andesites are altered to actinolite...(2-5 mm in size), quartz (1-2 mm) and pale-green hornblende (1-3 mm, Z = yellowish green) in a felsic groundmass | | | Book (volume) | Holmquistite—Ferro-holmquistite Cummingtonite—Grunerite Calcic Amphiboles Tremolite—Actinolite—Ferro-actinolite...Hornblendes Edenite—Ferro-edenite Tschermakite—Ferro-tschermakite Pargasite—Ferro-pargasite Magnesio...te Kaersutite—Ferro-kaersutite Joesmithite Sodic-calcic Amphiboles Richterite—Ferro-richterite Barr...Barroisite—Ferro-barroisite Winchite—Ferro-winchite Magnesio-katophorite—Katophorite Magnesio-taramite—Taramite...Amphiboles Glaucophane-Ferro-glaucophane Magnesio-riebeckite—Riebeckite Eckermannite-Ferro-eckermannite Lea | | | Journal (article/letter/editorial) | petrographically that this rutile is hydrothermal in origin Diabase Dikes (Ar/Ar) -2286 AURIFEROUS VEIN EMPLACEMENT...(U/Pb) 2684 _+ 7 - ferro-hornblende rim (Ar/Ar) 2672 -+ 16 - magnesio-hornblende core (Ar/Ar) 2693 -+...2693 ± 17 Ma for magnesio-hornblende cores and 2672 _+ 23 Ma for ferro-hornblende rims [6]. These metamorphic...slightly lower than, the closure temperature of hornblende for Ar diffusion. Although fluid inclusion studies...temperature range 300-400°C [17], metamorphic hornblende in the mine records an age at least 80 m.y. older | | | Report (issue) | plagioclase-augite—bearing Lago-Garzas lithofacies; and the hornblende-plagioclase—bearing Anon lithofacies). In this...than about 1.5 to 3 km. Lidiak (1991) reported hornblende compositions in Puerto Rican plutons are consistent...products of Tertiary phase V include intermediate hornblende-bearing lava breccia of the Jobos Formation and...as follows: *N, arc-like basalt from the Negroni quarry on the northern border of the complex (Fig. 8B);...sample AMPH-105), demonstrating that generation of hornblende occurred during the pre-arc oceanic phase. Therefore | | | Journal (article/letter/editorial) | massive flows, a diabase complex of sheeted and unsheeted dykes and massive diabase, and a plutonic suite...amphiboles range in composition from ferro-actinolite to tschermakitic hornblende. The distribution of amphibole...actinolitic hornblende; FAH = ferro-actinolitic hornblende; MH = magnesio-hornblende; FA = ferro-actinolite;...tremolitic hornblende; FH = ferro-hornblende;TH = tschermakitic hornblende; Fl'H = ferro-tschermakitic...ferro-tschermakitic hornblende; T = tschermakite; FT = ferro-tschermakite. Smartville Complex Tie-lines of coexisting | | Pilote, Jean-Luc, Barr, Sandra M., Wilson, Reginald A., McClenaghan, Sean, Kamo, Sandra, McNicoll, Vicki J., Bevier, Mary Lou (2012) Precise age and petrology of Silurian-Devonian plutons in the Benjamin River – Charlo area, northern New Brunswick. Atlantic Geology, 48. 97-123 doi:10.4138/atlgeol.2012.006 | Journal (article/letter/editorial) | and Landry Brook plutons and consists mainly of diabase, quartz monzonite to monzogranite, rhyolite porphyry...Dickie et du ruisseau Landry, et il se compose de diabase, de monzonite quartzique à du monzogranite, de...monzogranite, quartz-plagioclase rhyolite porphyry, hornblende dacite porphyry, and felsite. They intruded calcareous...parallel to regional strike of bedding and cleavage. Diabase dykes, also oriented southwest-northeast, are abundant...relationships observed in several places. Some of the diabase bodies are concordant with bedding and hence sill-like; | | | Journal (article/letter/editorial) | and consist of perthite (+ atbite + orthoclase),ferro-edenite,annite, qtarrz, Fe-rich augite, and fayalite...gabbro and diorite with varied amounts of ar-gite,hornblende, and biotite. Plagioclase,alkali feldspar, and...intrusion, in addition to augite, biotite, and hornblende. Ztrcon, titanite, apatite, magnetite,and ilmenite...accessoryminerals. The rocks are coarseto medium grained. Hornblende occursas rims around augite and also displays...zircon, magnetite,ilmenite, plagisslas., pyroxene, hornblende, biotite, alkali feldspar, quartz. In the field | | | Book (volume) | publisher. Cover photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical...Gerais, Brazil, better than those from the Harvard quarry in Greenwood? Are the morganites of Cerro de Urucum...Pala, California, better than those of the Bennett quarry in Buckfield? The answer to most of these questions...Naturhistorisches Museum der Stadt Bern, Bern, Germany, 143 p. Vlasov, K. A., Kuz'menko, M. Z., and Es'kova...omitted. Instead of Consolidated Feldspar quarry, Heal Granite quarry, or Sullivan Silver mine, etc., the corresponding | | | Journal (article/letter/editorial) | = Ascutney, T = western limit of occurrence of diabase dykes (McHone, 1978), and G = probable eastern...complex is composed of noritic olivine gabbro, hornblende gabbro, anorthositic gabbro and diorite fades...amphibole to be determined. Late actinolitic hornblende and chlorite develop in the vicinity of the felsic... and interstitial biotite. Rare prismatic ferro-hornblende to ferroedenite and zoned allanite (with epidote{...composed of a mosaic offluorine-richbiotite, hornblende and ferrohornblende, sodic plagioclase, ± quartz | | | Book | or vice versa. IX constituent of weigelite (hornblende-peridotite) from Weigelsberg, Moravia. Named...Named after Dr. Friedrich Ahlfeld, of Marburg, Germany. [M.A., 6, 147.] 14th List [NiSe03.2H20; Canad...a veinlet of Co and Ni minerals in a serpentine quarry near Oxford, Llano Co., Texas, contains red-violet...merchants, London. Also called ‘Princess Blue’. (The Quarry, London, 1908, vol. xiii, p. 257. W. G. Ren wick...99.] 18th List Alumino-ferro-hornblende. Amph. (1978), syn. of ferro-hornblende. 30th List Aluminohydrocalcite | | | Book | schist, plagioclase-pyroxene granofels, garnet-hornblende-pJagioclase gneiss), the Classification and...root narne). or (e.g. metabasalt, amphibolite, hornblende-plagioclase gneiss or 1netalin1estone, marble...as igneous rocks with >90% 111odal content of hornblende a nd pyroxene respectively, the SCM R recognizes...than calcite granofels, an1phibou te rather than hornblende-plagioclase granofe ls, siate and phyllite as...rocks containing olivine, and/or pyroxene and /or hornblende such as peridotite, harzburgi re, lherzolite | | | Journal (article/letter/editorial) | massive, aphyric, and/or plagioclase-phyric diabase, gabbro-diabase, and medium-grained olivine-bearing pyroxene-...Hamilton (Canada), in position 5c, along with Hb3gr hornblende neutron fluence monitor, for which an age of 1072...07–04 from Loki massif. Recrystallization of hornblende and plagioclase at the expense of the former...with andesine crystallization preceding that of hornblende. F, Granite sample Geo 07–21 from Dzirula massif...166 Ma. The amphiboles show chemical zoning, with ferro-tschermackite cores and actinolite rims (Fig. 12) | | | Journal (article/letter/editorial) | sheet-like bodies, such as diabase sills. Kilauea Iki lava lake is as thick as many diabase sills and is, for...along the roof contacts of some diabase sills. This is seen in the diabase sheets of the Culpeper basin...(HuscH, 1990), the Red Hill diabase of Tasmania (McDoUOALL, 1962), and a diabase sheet duplex in southern...persistent appearance of a thin chill zone of diabase between the granophyre and the contact itself (FROELICH...simultaneously as distinct masses within the main body of diabase itself. The granophyre must have been generated | | Dupuis, C., Hébert, R., Dubois-Côté, V., Wang, C.S., Li, Y.L., Li, Z.J. (2005) Petrology and geochemistry of mafic rocks from mélange and flysch units adjacent to the Yarlung Zangbo Suture Zone, southern Tibet. Chemical Geology, 214 (3) 287-308 doi:10.1016/j.chemgeo.2004.10.005 | Journal (article/letter/editorial) | blocks of serpentinite, partially rodingitized diabase and gabbro, and composite blocks of serpentinite...the ophiolitic mélange. (E) 2001-LHA-16: Green hornblende rimming a clinopyroxene in gabrro from the ophiolitic...brown tschermakite rimmed by metamorphic green hornblende in a gabbro from the ophiolitic mélange. Chl...Chl, chlorite; Cpx, clinopyroxene; Hbl, hornblende; Ilm, ilmenite; Pl, plagioclase; Ts, tschermakite. ...commonly zoned, from brown hornblende at the center to green hornblende to actinolite at the edge (Fig | | | Book | mineral’s name, which is occurs as a sulfides. ¢ Germany ; United States derived from akantha, the Greek...resulting from the metamorphism of basalt and diabase or detrital sedimentary rocks. It is also found...coal deposits. Main Sources: ¢ Brazil ¢ England ¢ Germany ¢ Italy @ Arizona, California, Colorado, Massachusetts...Main Sources: @ Czech Republic ¢ England ¢ France Germany ¢ Hungary ¢ India @ Italy @ Russia Spain @ Colorado...Denmark ¢ Dominican Republic @ England France @ Germany ¢ Italy ¢ Mexico @ Myanmar (Burma) ¢ Norway # Romania | | | Journal (article/letter/editorial) | mafic to intermediate dikes, hornblendite, and hornblende tonalite. The tonalite contains net-veined and...skeletal hornblende. These textures are interpreted to be the result of magma mixing. The hornblende tonalite...pargasitic hornblende to hornblende in dike rocks, mela-tonalite and hornblendite, and from hornblende to actinolite...amphiboles with strong normal zoning and resorbed hornblende with weak reverse zoning are attributed to conditions...fractionated hornblende. Hornblendites and mela-tonalites can be modeled as hornblende cumulates from | | Souza Neto, João Adauto, Legrand, Jean Michel, Volfinger, Marcel, Pascal, Marie-Lola, Sonnet, Philippe (2008) W–Au skarns in the Neo-Proterozoic Seridó Mobile Belt, Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit. Mineralium Deposita, 43 (2) 185-205 doi:10.1007/s00126-007-0155-1 | Journal (article/letter/editorial) | fac ferro-actinolite, fb ferberite, fl fluorite, fhb ferro-hornblende, fld feldspar, fprg ferro-pargasite...ferro-pargasite, fts ferro-tschermakite, gn galena, grt garnet, gru grunerite, hbl hornblende, hs hastingsite,...lenses (1.0–1.5 m wide) that are composed of hornblende, plagioclase, pyroxene, titanite, and allanite...the northern part of the area (Fig. 3). Late E–W diabase dikes crosscut the basement, schists, and skarns...marble/tremolite-magnesio-hornblende skarn/diopside skarn/tremolite-magnesio-hornblende skarn/wollastonite (olivine) |
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