 | | Journal (issue) | | ...................................... 25 Susan Lenz Update ...........................................area of New York, USA. Austria, Switzerland, and Germany have produced many fine specimens. There are hundreds...quartz variety include Val D’ Aoste, Italy and Germany. Wonderful milky “skeletal” iron-stained quartz...investigated. Fibrous Cryptocrystalline Quartz: Chalcedony is the general term for fibrous cryptocrystalline...waxy, vitreous, or occasionally dull luster. Chalcedony often has a botryoidal surface that is smooth |  | | Journal (article/letter/editorial) | | Micro-structural phenomena in agate/chalcedony: spiral growth 1 2 3 4 5 6 7 8 9 10 11 12 ABSTRACT -...of several occurrences in the Saar-Nahe region (Germany). These agates include spirals 14 of several...several occurrences 75 of the Saar-Nahe region, Germany (Schäfer, 2002, Fig. 2). These agates include spirals...not known from other agate occurrences in 78 Germany or worldwide. Because of their specific structure...foraminifera or snails) or result from inorganic processes (Lenz and Schäfer, 2008). 81 However, in the light of |  | | Journal (issue) | | April 28, 2009--Norman Lenz--Gemstone Inclusions: Good and Bad : Norman Lenz Continued on page 5 THE......................................... 16 Susan Lenz Update ...........................................almost all, and sticks it to a Bill which seizes more land than any prior bill, as I understand, and makes...whereYOU, ME and anyone else who hunts on any federal land (BLM, Forest Service, and on and on) and accidentally...worse, even if you didn’t get the fossil on federal land, but you have it, the burden is on you to prove |  | | Journal (article/letter/editorial) | | Published online June 2009 U-Pb ages of ferberite, chalcedony, agate, ‘U-mica’ and pitchblende: constraints...Geowissenschaften, Wilhelmstr. 56, D-72074 Tübingen, Germany *Corresponding author, e-mail: markl@uni-tuebingen...Geoforschungszentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany Abstract: This study deals with the use of new...southwest Germany. In detail, we present new U-Pb age data of ferberite (from Clara Mine), chalcedony (from...Mine), agate (Geisberg), carneol (‘‘Markgräfler Land’’), and confirm earlier geochronologic work on multistage |  | | Journal (issue) | | Outgoing President’s Message December, 2005 by Norman Lenz HGMS President, 2004-2005 ellow HGMS Members, ...Quartz, recotrite, and cookite from the Jeffrey quarry near Little Rock Arkansas. Arkansas Geological...microscopic quartz crystals Group Jones Mill quarry, M.C. Jones Mill quarry, M.C. Anatase deep blue crystals on...quartz leucoxene, minute white crystals Jones Mill quarry, M.C. Brookite deposits, Magnet Cove Ankerite discoids...white turn brown discoids, brown, small Jeffrey quarry, Pulaski Co. Antimony mines, Sevier County Aragonite |  | | Journal (issue) | | ...................................... 16 Susan Lenz Update ...........................................be Dane Mark, the expanding Vik Mark northern Germany, the great tribes that compose Northern Poland...com and shirleyleeson@msn.com D Susan Lenz Update by Norm Lenz ear HGMS Friends, Susan’s condition has...Secretary Margaret Hardman-Muye Past President Norm Lenz 20 THE BACKBENDER'S GAZETTE DECEMBER 2006 Call...a difference. You can too. Secure Rural Schools Land Initiative follow-up As promised in the April 2006 |  | | Journal (article/letter/editorial) | | OF THE SWAZILAND SUPERGROUP (BARBERTON MOUNTAIN LAND, SOUTH AFRICA) T. O. REIMER Dyckerhoff Engineering...of the Swaziland Supergroup (Barberton Mountain Land, South Africa). Precambrian Res., 12: 393--410....Africa. In the latter area the Barberton Mountain Land occupies a special position, as in it five baryte...early Precambrian rocks of the Barberton Mountain Land are placed in the Swaziland Supergroup which is...Fig. 1. Geological map of the Barberton Mountain Land. The Onverwacht Group is overlain conformably by |  | | Journal (issue) | | her studies in Budapest, Hungary and in Hagen, Germany approximately seven years ago, and she moved to...at the University of Houston and at schools in Germany and Italy. I Agates Are HOT by Art Smith Member...and Rainer Bode published by Bode in Haltern, Germany. It is telephone book-size with 656 pages and an...Secretary Margaret Hardman-Muye Past President Norm Lenz The meeting was called to order at 7:30 PM Approval...money. It is possible that Wayne Barnett or Norm Lenz has it, but Norm currently is out of town. ¾ Harrison |  | Broom-Fendley, Sam, Smith, Martin P, Andrade, Marcelo B, Ray, Santanu, Banks, David A, Loye, Edward, Atencio, Daniel, Pickles, Jonathan R, Wall, Frances (2020) Sulfur-bearing monazite-(Ce) from the Eureka carbonatite, Namibia: oxidation state, substitution mechanism, and formation conditions. Mineralogical Magazine, 84 (1) 35-48 doi:10.1180/mgm.2019.79 | Journal (article/letter/editorial) | | completely replaced by iron-bearing, rustbrown chalcedony (Figure 2). Remnant monazite-(Ce) grains in the...including opal and chalcedony, with minor hematite, calcite and quartz veins. The chalcedony contains abundant...by Begun et al. (1981), Silva et al. (2006) and Lenz et al. (2015). Tentative assignments of major Raman...monazite-(Ce). Cross-cutting relationships indicate that chalcedony continued to form after the cessation of S-bearing...dissertation (In German), Heidelberg University, Germany. Ekardt, F.D. and Spiro, B. (1999) The origin of |  | | Journal (issue) | | 2005 President’s Message September, 2005 Norman Lenz HGMS President, 2004-2005 ellow HGMS Members, ...western states and eventually to the brand new “Disney Land” and other wonderful places in California, Nevada...presented by Norm Lenz. The meeting begins at 7:30 pm. This meeting will be chaired by Norm Lenz. Everyone is...Stewart Volunteer for next month’s refreshments: Norm Lenz Guests: Zach Carter came with his grandmother,...who we are and what we do. Show ‘n Tell: Norman Lenz, President of the HGMS, brought in a mystery rock |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...May 29, 1949 in Montabaur, Germany. The family soon emigrated to the “land of the free,” settling in Beverly...(January), 1540–1542. BASTOS, F. M. (1972) Brazil, land of tourmalines. Lapidary Journal, 26 (8) (November)...years old. It was a zeolite (gismondine) from a quarry near Rome, and Jack later gave that specimen to... London, Cornwall and Paris. At the Lengenbach quarry in Switzerland, they enjoyed more collecting; then |  | | Journal (article/letter/editorial) | | The Krunkelbach Uranium Deposit, Schwarzwald,Germany: Correlationof RadiometricAges(U-Pb, U-Xe-Kr,...Krunkelbachvein-typeuranium deposit in southwest Germany wereinvestigated by theU-Xe-Kr,U-Pb,and•34U-•3øTh...occurredduringthe late Carboniferous Schwarzwald,Germany (47ø50•25•' N, 8øff50•'E, aland the Permian. titude...Armorican massifsin France, the Bohemian massifin Germany and Czechoslovakia,and indicatesthat someare of...quartz as ehert and symmetrically bandedquartz-chalcedony with minorbarite andflu- 50m VEIN •\•,,, |  | | Journal (article/letter/editorial) | | 1874 211 " ,,1875 421 172 Baldwin, A. E. oo. Banks' Land.. 470 Bardon Hill Stone 312 Barham ... 503 Barnard...elevation and depression of land ... 24 Causes which have h elped to shape the land on th cNorth Wal eo Bord...Cephal op~da of Kelloway 373 Rock ... ... ... 442 Chalcedony 43, 123, 153, 155, 282. Chalk, The 284, 500,...J. ... 10,11, 18,20 submergence and emergence of land during 3 Glacial Epoch 495 Croxton 283 Croydon •••...Davies, D. C. " Causes which have helped to shape the land on the North Wales 324,340 Border ... " Drift of |  | | Journal (article/letter/editorial) | | Bergakademie Freiberg, Brennhausgasse 14, 09599 Freiberg, Germany Helmholtz-Zentrum Dresden-Rossendorf, Hemholtz...Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany; r.moeckel@hzdr.de Department of Geological Sciences...commonly characterized as banded chalcedony. In detail, chalcedony layers in agates can be intergrown...starts with spherulitic growth of chalcedony continuing into chalcedony fibers. High concentrations of lattice...banding and colors. Keywords: agate; quartz; chalcedony; silica minerals; micro-structure; trace elements; |  | | Journal (issue) | | completely removed). They are from the Roncari quarry in East Granby, Connecticut. Also from the same...Sunday Bennett, Secretary oard members present: Norm Lenz, President; Scott Singleton, 1st Vice President;...Paleontology Rep.; Tom Wright, Day Light Rep.; Norm Lenz, Past President Approval of Minutes from last month...Agates Author unknown Via Gem Cutters News 05/05, Quarry Quips, 4/2000, Breccia 08/05 A process which...rock crystal. Opaline: Silica form similar to chalcedony but totally noncrystalline, more porous and containing |  | | Journal (article/letter/editorial) | | Pockelsstr. 4, TU Braunschweig, Braunschweig, Germany (ReceivedJanuary 10, 199i; acceptedafter revisionAugust21...relationships The investigated suite has been dated by Lenz et al. ( 1972 ) applying Rb/Sr and K/Ar methods...of 542 + 8 Ma on a latite stock from Wadi Feinan (Lenz et al. 1972). The K-Ar determinations were kindly...out by Dr. A. Baumann at the ZLG in Miinster, Germany. The isotopic data are summarized in Table 1. To...rhyelites of Wadi Museimir. lenticules filled with chalcedony (Fig. 4E); structureless, massive pink-coloured |  | | Book (volume) | | 1809. | Lenz. Erkenntnisslelire der anorgischen Natur Korper, von Dr J. G. Lenz. HofTinanti. Lenz. Giessen...concretions occur most frequently in the garnet of Green land. £ The transparent varieties are often impure in...Lapland, Sweden, Saxony, Bohemia, Silesia, Swisser- land, Stiria, the Tyrol, Salzburg, Hungary, and France...is sold under the name Smoke Topaz; and in Scot¬ land these varieties are named Cairngorm-stones, and...Steffens, b. i. s. 167. Id. Hoff. b. ii. s. 65. Id. Lenz. b. i. s. 366. Id. Oken. b. i. s. 299« External |  | | Journal (issue) | | ...................................... 26 Susan Lenz Update ...........................................lapis Nevada mineral: quartz (crypstocrystalline, chalcedony) ......... rock composition: SiO2 .............et al. (1998), are found in the Black Obsidian Quarry just north of Silver Cliff, Custer County, Colorado... this void space has been filled with agate, chalcedony, and quartz crystals. The concentrically banded...shore of Sam Rayburn Reservoir and an abandoned quarry called the Blue Hole. One of his localities is |  | | Report (volume) | | consequences . . . . . . . . . . . . . . . . . . . LENZ, A.C. 8z JACKSON, D.E. Arenig and Llanvirn graptolite...consequences . . . . . . . . . . . . . . . . . . . LENZ, A.C. 8z JACKSON, D.E. Arenig and Llanvirn graptolite...most dire need of revision is the lower Ordovician. Lenz and Jackson in their account of the Arenig and Llanvirn...(1971) and implies a volcanic origin for the chalcedony. The fragments were sectioned with an ultramicrotome...SZANIAWSKI, H. 1980. Conodonts from the Tremadocian chalcedony beds, Holy Cross Mountains (Poland). Acta Palaeont |  | | Journal (issue) | | from page 1 March 23—Former HGMS President Norman Lenz will provide a fascinating program on “Gemstone...should prove to be an interesting program. Susan Lenz plans to come with Norman, so this will be a welcome...Wisconsin - River Falls from Breccia 9/2009 ometimes chalcedony, including agate, is described as a fine-grained...tools are harder and more durable when made from chalcedony rather than coarse quartz. On the other hand...grind up as a concrete additive than chalcedony. The chalcedony causes various chemical reactions in |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg. W. Germany Eric Offermann Arlesheim. Switzerland Jeffrey A...major chemical industries in the United Kingdom, Germany and Poland. Potash was discovered in northeast... v .l5 /# 5 Jacupiranga m ine (Brazil), Jensen quarry (CA ), C unha Baixa m ine, Paulkerrite $10 v ...3 /# l D ohrm ann Gold collec tion, G illette quarry (CT), Spanish fluorite $12 v .23/#2 M ichigan...$10 v.25/#3 Jacupiranga m ine (Brazil), B ennett quarry (M E), R ose m ine (N M ), Prospect Intrusion $10 |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...Jeffrey mine (Quebec), Alpine Rodingites, Fluorite (Germany) $10 v.l0/#3 Taewha mine (Korea) Japan Twins (Quartz)...(Brazil), Jensen quarry (CA), Cunha Baixa mine, Paulkerrite $10 v.l5/#6 Bad Ems (Germany), Touissit Vanadinite...Hills type locali ties, Urucum (Brazil), Kalkar quarry (CA), Kremsmiinster $10 v.l7/#6 Bleiberg (Austria)...(Sweden) Carrara Marble (Italy), Marburg Museum (Germany) $10 Celestite (IN), Derbyshire (England), Lotharmeyerite |  | | Book | | begins with non-equilibrium spherulitic growth of chalcedony. The banding and colors in agate are “governed...carbonaceous matter associated with (fibrous) chalcedony or fine-grained quartz is the major coloring agent...Bergakademie Freiberg, Brennhausgasse 14, 09599 Freiberg, Germany Helmholtz-Zentrum Dresden-Rossendorf, Hemholtz...Technology, Chemnitzer Str. 40, 09599 Freiberg, Germany; r.moeckel@hzdr.de Department of Geological Sciences...commonly characterized as banded chalcedony. In detail, chalcedony layers in agates can be intergrown |  | | Journal (issue) | | ....................................... 9 Susan Lenz Update ........................................... Unknown O &URZ¶V$UHD Saline Lumber company land Yellow to orange, no matrix, fluorescent, planerite...substantial quantities were found in the Wagholi quarry. The quarry mines a 30-foot thick layer of hard, black...of how to keep the workers working on what the quarry wants worked on. Mineral collectors, on the other...permission by J. Bartsch). D Susan Lenz Update by Norman Lenz ear HGMS Friends, Susan has been mostly |  | Voudouris, P., Mavrogonatos, C., Spry, P.G., Baker, T., Melfos, V., Klemd, R., Haase, K., Repstock, A., Djiba, A., Bismayer, U., Tarantola, A., Scheffer, C., Moritz, R., Kouzmanov, K., Alfieris, D., Papavassiliou, K., Schaarschmidt, A., Galanopoulos, E., Galanos, E., Kołodziejczyk, J., Stergiou, C., Melfou, M. (2019) Porphyry and epithermal deposits in Greece: An overview, new discoveries, and mineralogical constraints on their genesis. Ore Geology Reviews, 107. 654-691 doi:10.1016/j.oregeorev.2019.03.019 | Journal (article/letter/editorial) | | Nordbayern, Universität Erlangen-Nürnberg, Erlangen, Germany; karsten.haase@fau.de; 5 reiner.klemd@fau.de;...Institut für Geologie, TU Bergakademie Freiberg, Germany; Alexander.Repstock@geo.tu-freiberg.de Institute...of Mineralogy-Petrology, University of Hamburg, Germany; alioudjiba209@yahoo.de; ubis@uni- 7 hamburg...Mineralogy and Petrology, University of Hamburg, Germany. Operating conditions were: 20 kV and 20 nA, with...related to sericitic alteration, and amethyst-chalcedony veins associated with Kfeldspar (adularia) alteration |
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Lenz Quarry, Hintersteinerhof, Rockenhausen, Nordpfälzer Land, Donnersbergkreis, Rhineland-Palatinate, Germany