 | | Journal (article/letter/editorial) | | follows. 2.1. Saunstein-granodiorite The Saunstein quarry is located close to the Bavarian Pfahl zone, a...plagioclase. It was advocated by Troll (1967) and Steiner (1969, 1972) that this fabric, including the frequently...thought to be derived from Late-Variscan granites (Steiner, 1969, 1972). Microdrilling was performed on four...Saunstein quarry; b) syenite, hydrothermally altered with pink feldspar, Kirchdorf quarry; c) granodiorite...Patersdorf, Wildtier quarry; d) diorite from the Fürstenstein pluton, Gramlet quarry. Different sized holes |  | | Journal (article/letter/editorial) | | A. S T E I N E R New Zealand Geological Survey, Lower Hutt SUMMARY. Hydrothermal almost pure potassium...walls only K-feldspar is precipitated, whereas andesine phenocrysts of host rocks are replaced by both...N o r t h Island o f New Zealand (Steiner, I953, I955, I968; Steiner and Rafter, I966 ) it has been found...breccia. Hydrothermal K-feldspar replaces primary andesine phenocrysts and groundmass, and also forms incrustations...stability field of K-feldspar and albite respectively (Steiner, I968). In spite of a considerably higher concentration |  | | Journal (article/letter/editorial) | | Department of Scientific and Industrial Research, Lower Null, New Zealand ABSTRACT Systematic mineralogical...volcanic ash showers, collected from the Terraces Quarry, Taupo, has enabled the showers to be grouped into...Sequences 19-22 and 23-25 crystallized under much lower vapour pressure. From the Ab-Or-Q-H2O diagram, a...section from which specimens were obtained is in a quarry (N Mesozotc Quaternary W h o l e area covered... Map of the Taupo area showing location of the quarry where the Taupo pyroclastic sequence was collected |  | | Report (issue) | | Basalts (c) Dispei-Lake Hannington Phonolites (d) Lower Menengai Volcanics .. (e) Sirrkon Volcanics (ƒ)...North Kinangop and Kariandusi Trachytes (3) The Lower/Lower Middle Pleistocene Succession (a) Willan's Farm...Porphyritic Trachyte (b) Nakuru Lake Syndicate Quarry Phonolite .. (c) Mbaruk Basalt.. (d) Gilgil Trachyte...Squadron, R.A.F.). PLATE VIII Air photograph showing Lower Pleistocene grid faulting disrupting the plateau...episodes of decreasing magnitude—Miocene, Pliocene, Lower Pleistocene, Middle Pleistocene, Upper Pleistocene |  | | Journal (article/letter/editorial) | | Illinois 60637, U.S.A. and A. STEINER New Zealand Geological Survey, Lower Hutt, New Zealand (Received...resulting in an 0’8depletion averaging about 4?& A lower limit on the ratio of the mass of water to rock...origin (CRAIG et al., 1956), they generally have a lower CI’8/O’6 ratio than water which would be in equilibrium...for the silicic magma underlying this region (STEINER. 1958: CLARK, 1960). Rocksur7d hydrothermal ...andesite. all 01 Pliocene to Pleistocene age. Andesine phenocrysts are the only feldspar present in the |  | | Report (issue) | | and W. A. Watters DSIR Geology and Geophysics, Lower Hutt Regretfully, an incorrect initial for Mr Railton...title page. His initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium...may be unfamiliar with chemistry, an Survey) in Lower Hutt. They may also be consulted explanation of...various stages of the draft, and PO Box 30-368, Lower Hutt. J.G. Gregory for his advice and encouragement...Crystals in quartz vein cutting gneiss (visible on lower edge of specimen), Gertrude Saddle, Fiordland. (20 |  | | Journal (article/letter/editorial) | | are still being altered by hydrothermal fluids (Steiner, 1953). The new mineral has been found in drill...varies approximately from 2 to 15 %. It replaces andesine phenocrysts (fig. 1) and fills pores, cavities...crystals or completely filled with massive 692 A. STEINER ON aggregates of wairakite. One of these ejected...Photomicrographs of wairakite, New Zealand. FIG. 1 Primary andesine (A) partly replaced by wairakite (W) in rhyolitic...chemical analysis a subhedral crystal was 694 A. STEINER ON c r u s h e d a n d powdered. A s a m p l e |  | | Journal (article/letter/editorial) | | are shown to be of regional extent. They include lower grade heul~n~~~alcim~qua~z amblages and higher grade...relative to (Ca,Na,)O.Al,O, tends to increase for lower temperrtturss of formation in accordance with theoretical...pressure, but the equilibrium temperature may be much lower. Preliminary solubility work indicates a reaction...Blomidon, Nova Scotia, and for prehnite from Prospect Quarry, New South Wales. 1. INTRODUCTION (W. S. F....transitions from greenschist assemblages onwards, but lower grades have not been widely recognized. FYFE (1955a) |  | | Journal (article/letter/editorial) | | STEINER New Zealand Geological Survey, Box 30368, Lower Hutt, New Zealand (Received 31 August 1967) Abstract...Zealand and the location of Wairakei. 193 A. STEINER 194 altered rocks is known, the chemical composition...glassy material and varying amounts of detrital andesine and quartz. and occasionally ferromagnesian minerals...Wairakei area. Comparatively large phenocrysts of andesine. and relatively minute crystals of pyroxene and...developed only locally at and near the surface (Steiner, 1953) produces kaolinite, alunite and opal from |  | Ewart, A, Stipp, J.J (1968) Petrogenesis of the volcanic rocks of the Central North Island, New Zealand, as indicated by a study of ratios, and Sr, Rb, K, U and Th abundances. Geochimica et Cosmochimica Acta, 32 (7) 699-736 doi:10.1016/0016-7037(68)90009-4 | Journal (article/letter/editorial) | | experimental error (0*7041-O-7044), being consistently lower than the Sr isotopic ratios of the intermediate...than the rhyolite lavas, while the pumices have lower average Rb, K, U, and Th, and higher Sr than the...Mineralogioallyand ohemioahy, these rooks are very Lower Pleistocene (HEALY et al., 701 Petrogenesisof...reflected in the phenocryst mineralogy: Plagioclaae (andesine), hypersthene, titanomagnetite, ilmenite (all... “%rgin&’ (eu~~cl~&l) f&es greywaoke. Karapiro quarry, Kasapiro. P.26184. Argihite from near boundary |  | | Report (issue) | | vitric and welded tu®s, and in clay. Association: Andesine, epidote, clinozoisite, prehnite, calcite, aragonite...Prefecture; Onikobe, Miyagi Prefecture; the Yugami district, Fukui Prefecture; Hikihara, Hyogo Prefecture...Type Material: Geological Survey of New Zealand, Lower Hutt, New Zealand, P13871; National Museum of Natural...Washington, D.C., USA, 137192. References: (1) Steiner, A. (1955) Wairakite, the calcium analogue of analcime |  | | Journal (article/letter/editorial) | | dredged from ocean floors and ridges and for on-land ophiolites (e.g., Bezzi and Piccardo, la71; Miyashiro...individual large slabs exposed in the Kuanshan district. Field investigations (Liou et al., 1977) have...aggregates of smaller crystals characterized by much lower An contents; in many cases, the large crystals are...produced some distance away from the ridge under lower temperature conditions (stage II). J.G. Liou and...rocks; they range in composition from albite to andesine; however, the vein plagioclases are more sodic |  | | Journal (article/letter/editorial) | | HYDROTHERMALLY ALTERED ROCKS AT WAIRAKEI, NEW ZEALAND A. Steiner 193 Geothermal fluid discharged by steam wells...MONZONITE, BUTTE DISTRICT, MONTANA J. M. Guilbert and R. L. Sloane 215 Andesine plagioclase is one...hydrothermal alteration of quartz monzonite of the Butte district. Montana, Replicas of fresh. incipiently, and |  | | Journal (article/letter/editorial) | | is discussed by GRINDLEY ( 1959), LLOYD( 1959), STEINER (1963), NAIRN(1973) and HEDENQUIST (1983a). SETl-ING...thermal inversions. Stratigraphy modified from STEINER(1963); stratigraphic nomenclature as in Fig. 1...are for later calcite. Abbreviations are: and, andesine; biot, biotite: mt/ilm. magnetite, ilmenite; ksp...sheets (C) contains normally zoned oligoclase-andesine (An2& and embayed quartz phenocrysts. Biotite...Waiora Formation, is moderately welded and contains andesine (An32_38) and embayed quartz phenocrysts along |  | | Journal (article/letter/editorial) | | allusion to pH and E,,. this new A-1400 Vienna. Austria. central parameter governing aluminium-silicate...with respect to their corresponding mica shifts to lower Al”-values implying that the disordered feldspar...readily allowing the corresponding mica to form at lower Al,,-values as compared to the more stable, ordered...involved. According to BROWNEand ELLIS (1970) and STEINER (1977) the primary plagioclase most commonly encountered...encountered in New Zealand systems is andesine with a composition taken to be close to alb,, an50. Accept- |  | | Journal (issue) | | tourmaline pg. 353 369 Gem News International Andesine from Tibet and Inner Mongolia • Vivid kunzite...of color in a diamond. In the New York jewelry district on Maiden Lane, neighboring buildings were painted...effect; that is, the color will appear more yellow (a lower color grade). The relative amount of UV versus visible...GIA began in the early 1970s revealed that the lower UV content helped reduce the extreme appearance...observable (reported as “none”) fluorescence. For K and lower, a “faint” fluorescence reaction is acceptable. |  | | Journal (article/letter/editorial) | | twinning parallel to | 1101 in both cases. Wairaki (Steiner) a 1.498*.001 7 1.502+.001 .004 70oto 105o,av...properties are very similar to those recorded by Steiner (1955), with the possibleexceptionof the optic...conditions. The first two reported occurrences (Steiner, 1955, 1958) were very similar: alteration of plagioclaseof...subsequent discovery that wairakite occurred replacing andesine in Eocene tuffaceous rocks of Washington (Waters |  | | Book | | concerning the world of rocks in the light which Rudolf Steiner has shed on all spheres of human life and endeavour...sea was broken by the gradual formation of solid land. As we have seen, it was the tiniest organisms which...to explain the past from the present. Rudolf Steiner in his cosmology has so presented the ‘idea’ behind...the Bio-Dynamic agriculture introduced by Rudolf Steiner, this fact has been made use of for more than 40...in a position to take the researches of Rudolf Steiner on the past of the Earth as the foundation of our |  | Fouillac, A.M., Fouillac, C., Cesbron, F., Pillard, F., Legendre, O. (1989) Water-rock interaction between basalt and high-salinity fluids in the Asal Rift, Republic of Djibouti. Chemical Geology, 76 (3) 271-289 doi:10.1016/0009-2541(89)90096-x | Journal (article/letter/editorial) | | basalts, commonly with a doleritic texture. (2) Andesine basalts, by far the most common in the Asal rift...Ferrobasalts, very similar in composition to the andesine basalts. These volcanic rocks are by far the most...iddingsite develops along fractures in the grains. The andesine basalts and ferrobasalts, the latter much richer...926 m could not be measured due to cave-in in the lower part of the borehole (Rocher, 1983). The thermal...between 68 ° and 223 ° C. T h e y are systematically lower than the temperatures measured or estimated, but |  | | Journal (article/letter/editorial) | | high-alumina basalta. ,The Ongaroto basalt has lower AlzO3 and higher MgO, Ni and Cr, and this, together...rapidly more sodic towards the margin and may reach andesine in composition. In few rocks xenocrysts of plagioclase...Main T a u p o trend and Cumulative trend after Steiner (1958). Open square represents average high-alumina...the Matahi ba:~alt which has a higher SiO2 and lower MgO and CaO, probably due to small rhyolite inclusions...The Ongaroto basalt (Tables 4 and 5, No. 2) has lower A1203 and higher MgO, :q'[ and Cr. This is consistent |  | | Journal (article/letter/editorial) | | (initially with the Mg+2.C03 -zorich waters) near the land surface and at tem peratures close to the annual...the crystalline granitic rocks of the Jachymov district are rich in radon (3.5 x 10-7 Ci) and at 30°C...have been concentrated from their original much lower concentrations by salt sieving as suggested by Berry... As they show, however, the deep brine is much lower in CO2 than the overlying more dilute waters. CO2...to the Salton Sea brines. The Red Sea brines are lower in possible economic metals (Brewer & Spencer 20; |  | | Journal (article/letter/editorial) | | the studies referred to above. The work of W. F. Steiner, B. J. Haase, and J. B. Doak in constructing and...(Bayley, 1959a); the Iron River-Crystal Falls district, Iron County (James, et al., 1959); and central...1961); and the southern part of the Menominee district (Prinz, 1958). A generalized geologic map of the...Precambrian age, surrounding island-like masses of Lower Precambrian crystalline rocks. The strata of the...which is represented by the Dickinson Group of Lower Precambrian age, and the younger by the Animikie |  | | Journal (article/letter/editorial) | | Browne New Zealand Geological Survey, Box 30368, Lower Hutt, New Zealand INTRODUCTION In the fall of 1929...1966, 1967), Wairakei (Steiner 1953, 1955, 1968, 1970), and Waiotapu (Steiner 1963). Many aspects of...found in cores from an active geothermal field (Steiner 1955, Coombs 1955). Several factors affect the...& Muffler 1978, Keith et al 1978. The Geysers: Steiner 1958, McNitt 1964. Pauzhetsk: Naboko 1970. Matsukawa:...npub lis hed observations. N.Z. Vo lcani c Zone: Steiner 1953, 1963, 1968, Browne & Ellis 1970, Browne, |  | | Journal (article/letter/editorial) | | migmatised dykes around PX2 are comparable to their lower grade equivalent hornfelsed dykes and greenschist...early evolution of the Atlantic passive margin (Steiner et al., 1998), overlain by Tertiary volcanic sedimentary...are also found in two size categories but in much lower abundance than the augite. The matrix consists of...the hornfels zone. Small, polygonal, oligoclase–andesine plagioclase (An23–46) appears recrystallised and...Lithos 102 (2008) 616–639 larger, probably due to a lower degree of equilibration. A few larger, elongate |  | | Journal (article/letter/editorial) | | silicic host rocks originally contained quartz and andesine phenocrysts and a glassy or fine-grained groundmass;...The coin diameter = 2.7 cm for scale. replaced andesine phenocrysts, occurs as microcrystalline aggregates...inclusions and occurs only as a pseudomorph of andesine. Carbonates: Calcite rarely comprises more than...drilled parts of the system. Calcite replaces andesine and volcanic glass, typically in grain contact...dominant calcsilicate minerals present, replacing andesine phenocryst or occurring as open-space fillings |
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