 | | Book | | dolerite, or diabase, can be seen in this irregular dyke with darker-coloured chilled margins. ALTERED ... 54 IGNEOUS ROCKS Lamprophyre BLOCKY jointing makes this lamprophyre dyke stand out from the surrounding...surrounding rock. Usually black when fresh, lamprophyre is hydrothermally altered and then weathers to...rhyolite and dacite lava flows. AN IRREGULAR dyke of pitchstone, darker along its edges, is shown...with dilute acid. Soapstone quarries of the Great Dyke, Zimbabwe provide material for sculpture. SOAPSTONE |  | | Corporate Document (Series) | | substantial galena lode near the present Zeehan town centre. The Dundas field, ten kilometres to the east,...costeaning, trenching or large scale pitting. However drilling willbe allowed with the written permission of...Aegirine occurs in some of the porphyritic, syenitic dyke rocks of the Cygnet alkaline complex, and in associated...1984) and was recently identified in a phonolite dyke from near the Tomahawk River (Everard et al., 2004a)...1984) and was recently identified in a phonolite dyke from near the Tomahawk River (Everard et al., 2004a) |  | | Book | | kolonialwirtschaftl.LinternehmungenBd.7, 305pp.,Berlin {de Gruyter). GORICH, G. {1890):Geologisch-mineralogische...Tsumeb Corporation was done. When exploratory drilling revealed a second oxidation zone in the Tsumeb...with enlarged hoisting capacity.The new shaft, the "De Wet shaft", becamefully operational towards the end...flattening out and lying in Left: The head frame of the De-Wet shaft, the last main shaft of the Tsumeb Mine...Bodcn3rtcn; geo ogi:dtctb.mmtr Petrefakten, ~;t:!7':.de:~~u~::~c"n~:'A:!)~~!·,'::se~cotcl.ton·scho Mcdenc |  | | Journal (volume) | | GEOLOGINEN TUTKIMUSLAITOS BULLETIN DE LA COMMISSION GEOLOGIQUE DE FINLANDE N :o 140 SUOMEN GEOLOGISEN...SALLSKAPET I FINLAND COMPTES RENDUS DE LA SOCIETE GEOLOGIQUE DE FINLANDE XX PENTTI ESKOLA 65=VU OTISJUHLAJULKAIS...TUTKIMUSLAITOS BULLETIN OE LA COMMISSION GEOLOGIQUE DE FINLANDE N .o 140 SUOl\1EN GEOLOGISEN SEURAN JULKAISUJA...SALLSKAPET I FINLAND CO~ lPTES RENDUS DE LA OCIETE GEOLOGIQUE DE FINLANDE XX PENTTI ESKOLA 65=VUOTISJUHLAJULKAIS...GLAss, Washington VIII Bulletin de la Oommission geologüque de Finlande N:o 140. F. F. GROU'l" Minneapolis |  | | Journal (volume) | | GEOLOGINEN TUTKIMUSLAITOS BULLETIN DE LA COMMISSION GEOLOGIQUE DE FINLANDE N :o 140 SUOMEN GEOLOGISEN...SALLSKAPET I FINLAND COMPTES RENDUS DE LA SOCIETE GEOLOGIQUE DE FINLANDE XX PENTTI ESKOLA 65=VU OTISJUHLAJULKAIS...TUTKIMUSLAITOS BULLETIN OE LA COMMISSION GEOLOGIQUE DE FINLANDE N .o 140 SUOl\1EN GEOLOGISEN SEURAN JULKAISUJA...SALLSKAPET I FINLAND CO~ lPTES RENDUS DE LA OCIETE GEOLOGIQUE DE FINLANDE XX PENTTI ESKOLA 65=VUOTISJUHLAJULKAIS...GLAss, Washington VIII Bulletin de la Oommission geologüque de Finlande N:o 140. F. F. GROU'l" Minneapolis |  | | Book | | 150 years to establish these islands as a major centre of academic and economic minerJlogy. At one time...mindat.org/index.pbp), to Michel Outrequin ofCameca, France, for advice on the SX 100 electron microprobe,...Linkinhome, Cornwall Meldonaplnequany,nrOkehampton, De\'on montebrasite Meldon aplitequany,nrOkehampton...StAustell,Cornwall t!.eldonapfitequarry,nrOkehampton, De o:i p'.umbojarosite Severallocalities in Cornwall...nrOkeha:np'.on, De·:0:1 svanberg:te· WhealCoates,StAgnes,Cornwall Me'donap'.~e quany,nrOkehaTp:on. De.'01 tellurob:smu'Ji::eC |  | | Report (issue) | | 32 C / 5 Cleavelandite forms part of a zon ed dyke containing pollucite at t h e Valor property, Lacorne...Rept ., vol . 37 , Pt . II , p . 74). A LT Ont . De p t. 41 I /16 Altaite has been identified by X...in Hin cks Township (H . C . Rickaby, 1931 : Qnt. De p t. Mines , Ann . Rept., vol. 41 , Pt. II , pp.12...of No . 4 zone (H . S . Armstrong , 1 950: On t . De pt. Mines , Ann . Rept ., vol . 59 , Pt . V, p ....Red Lake min es (H . C . Horwood , 1 940 : On t. De p t . Mines , Ann . Rept. , vo l. 49, Pt. II, p p |  | | Book (volume) | | each pair falls on the line AB (after Bamberg and De Vore, 1951). Olivine 17 The distribution of Mg...olivines and diopsides, has also been discussed by De Vore (1955) in rela¬ tion to the ionization potentials... and for olivine and diopside, are also given by De Vore. Wager and Mitchell (1951) have determined the...sections perpendicular to /3 and y increases, from the centre to the periphery. The birefringence and polarization...Caillere, S., 1935. Sur les caracteres specifiques de la bowlingite. Compt. Rend. Acad. Sci. Paris, vol |
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