 | | Journal (article/letter/editorial) | | SCANDINAVIA By CUNNAR BIAREBY Boston, Massachusetts NORWAY A cruise up and down the beautiful Oslofjord and...as reading literature and attending lectures on Norway, made me revisit that country for the fifth time...stupendous fjords and other marvelous sceneries, Norway has many rare minerals. Perhaps nowhere else have...many interesting localities. And later to the feldspar,' quartz and rutile mines in or near Kragero....for Uraninite or other radioactive minerals and feldspar. LAAVEN ISLAND The most exciting locality in |  | | Report (issue) | | . . . . . . . . . . . . . Aust-Agder .................. Vest-Agder . . . . . . . . . . . . . . . . ...særlig almindelig på granittpegmatittene omkring Arendal. Uranniobitt er en niobholdig uranbekerts som er...thorittholdige pegmatittganger langs kysten fra Kragerø til Arendal drevet på thoritt. Senere gikk man over til å fremstille...Tvedestrand og Arendal. Froland ved Arendal. Fjelds grube i Ø. Moland. Omegnen av Arendal: Kniben ved Havstad...Froland: Blakstadbroen, Skuggestøl. omegnen av Arendal: Birkenlund ved Havstad, Langsæ. Alve, Barbo, Narestø |  | | Journal (article/letter/editorial) | | fishing port on the Lofoten archipelago west off Norway. We left Narvik at 1 o'clock a.m. I watched the...time before the S.S. Finnmarken left for central Norway so I hiked about a while. I had to make another...or don't believe it, get hold of a good map of Norway. Well, there I was. Most of us have been told that...Berlin, Dresden and Paris. Six years later I was in Norway for the fifth time; Mrs Bjareby was with me and...irresistible urge to do some field work in southern Norway came over us. The world famous silver mine at Saggrenda |  | | Journal (article/letter/editorial) | | spreadingfrom a dark nucleus and staining quartz and feldspar, and he considered the mineral to be altered allanite...was found in the Redstone. Young (1938) found keilhauite, a sphene rich in rare earths, in the Sterling...specimen studied was obtained from the Redstone quarry, shown on the Ashaway (Conn.-R.I.) quadrangle north...a coarse-grained red granite. Pink orthoclase feldspar comprises about 45 per cent of the rock. The other...Mineralog. Abs.,4, 150*151. YouNc, J A., Jn. (1938), Keilhauite, a guide mineral to the Sterling granite gneiss |  | | Journal (article/letter/editorial) | | the early stage, followed by the removal of K-feldspar within the developing magmas. The 592 ± 7.2 Ma...identified by an alignment of euhedral alkali-feldspar p h e n o c r y s t s , biotite, and amphibole...(CS); and (4) pyroxenes, biotite, and leuco-alkali feldspar syenites (PBLS) occurring as small bodies, around...i t i c . It shows an increase in modal alkali feldspar (54% on average) and a decrease in mafic phases...between biotite and later-crystallized alkali feldspar is observed locally. The facies is equigranular |  | | Journal (article/letter/editorial) | | intrusion; (2) quarrying operations at the Sullivan Quarry have exposed a great deal of fresh rock at various...the quarry. No evidenceof a chilled border is present. The dike as exposedin the Sullivan Quarry is more...which is exposed at several places in the Crumb Quarry to the west, undulates with departures of two or...outlines. carlsbad twins are common. The potash feldspar is microcline, some of which is perthitic. A few...index of 1.878+.002, which is nearer to that of keilhauite (Young 1938). The sphene of the granodiorite |  | | Journal (article/letter/editorial) | | "o*o"o OF SOUTHERI{ No,4 NORWAY {Iniaersity oJ Oslo, Oslo, Norway. fNrnooucrroN The rare minerals...minerals of the granite pegmatites of southern Norway have been studied especiallyby Brlgger (7, 8), Schetelig(8...recently many new pegmatites have been opened for feldspar production, and the use of r-ray spectrographic...observations of the granite pegmatites of southern Norway made during the summers 193I-36, and laboratory...phases of the principal stage of crystallization: feldspar, qvartz, etc., seldom show any trace of deformation |  | | Journal (issue) | | ZODAC Contents for March, 1940 CHIPS FROM THE QUARRY .................................................SCANDINAVIA By GUNNAR BJAREBY Boston, Massachusetts NORWAY A cruise up and down the beautiful Oslof}ord and...as reading literature and attending lectures on Norway, made me revisit that country for the fifth time...stupendous fjords and other marvelous sceneries, Norway has many rare minerals. Perhaps nowhere else have...many interesting localities. And later to the feldspar, quartz and rutile mines in or near Kragero. On |  | | Catalog/List | | masses with darker ALBITE lx2 50p Kragero Norway 2x2 Feldspar Hornblende £1.20 -ALLANITE Cc pure black...Froland, Arcndal, lx2 £6 2x2 £12 Cc Ca Y Al Fe SiO Norway ALLOPHANE grey bleby small botryo i dal with poss...2x3£5 White phenocrysts at least 5mm size 3x4£8 _ Feldspar ____ _ _ richf�tributed in Porph�ry, _____ _ _...Analys is. Saga Quarry, Tvedalen near Mica paper avail'!�_____ _ ___Larv ik, Norway __ _ ___ _ Loch Scrida...Scotland 18 ANORTHITE Rich grey crystalline mass. Feldspar 168 ANORTHOCLASE Felspar group pure pale brown |  | | Report (issue) | | Slaughter---Nepheline syenite------ ----------------Feldspar basalt------- --------------Phonolite------------...23.3 Italy, Trentino, Pfitschthal-------------Norway, S~ndeled------------------------- Arkansas, Magnet...Cove--------------------Finland, Tipasjarri----------------------Norway, Krager~-------------------------- Virginia, ...------U. S. S. R., Sugamak---------------------Norway, Bamle----------------------------Vermont, Har...------Australia, Blumberg----------------------Norway, Bamle----------------------------U. S. S. R., |  | | Report (volume) | | magnetite, ilmenite, pyrite, fluorite, sphene (or keilhauite; see Young, 19-38), apatite, and monazite. Biotite...analyses gave the following results: potassium feldspar 34 to 57 percent, averaging 45 percent; albite-oligoclase...analyses gave the following proportions: potassium feldspar 42 to 53 percent, averaging 50 percent; albite...many places. The main constituents are glassy feldspar, quartz, and biotite; purple fluorite is prominent...GEOLOGY OF THE CROMPTON QUADRANGLE Bll doned quarry a quarter of a mile north of Lippitt and (2) exposures |  | | Journal (article/letter/editorial) | | sillimanite-graphite-quartz-schists, sillimanitepotassium feldspar~luartz-gneiss, calc-gneiss; granulite, etc.: ...anatase, uraninite, tschevkinite, ferrite-thorite, keilhauite, samarskite, fergusonite, aeschymite, polymignite...compositions corresponding to the sphene and 283 keilhauite, analyses 9-13 approximate to the composition...I/Si207) as well as sphene CaTi (O/SiO4) and keilhauite (Ca, Y, Ce) (Ti, AI, Fe ...) (O/SiO4) of the |  | | Journal (issue) | | 00 Beryl. Que. XI sections and xllne in quartz, feldspar, 4 x 5" $7.50 Beryl, var. Emerald. Salzburg. Good...calcite, 3 x 4", $1.50: 4-1/2x 6", $3.50 Keilhauite. Norway. Cerium-bearing tltanite in good brown cleavages...50 Sphene (Titanite) - Ontario. Brown xled with feldspar, 5 x 811 , $5.00. Good cleavage masses in pegmat...Columbite. Ontario. Xllne with some euxenlte in feldspar, $1. 65 lb. Cuprite. Montana. Massive with chrysocolla... Microcline, var. Amazonstone. Va. Good green feldspar, somewhat stained (not for cutting), regular $ |  | | Report (volume) | | staurolite, sillimanite, and sillimanite and potassium feldspar) are mapped, and it is noted that the first appearance...Stony Brook, as in the southern part of the Barrett quarry. Amphibolite is well exposed in the lens southwest...and feldspar. Major minerals of the plagioclase gneiss are oligoclase, quartz, potassium feldspar, biotite...minor minerals are magnetite-ilmenite, potassium feldspar, epidote, apatite, and scapolite. PUTNAM GNEISS...constituent. Accessory minerals are potassium feldspar, magnetite-ilmenite, pyrite, apatite, zircon, |  | | Journal (article/letter/editorial) | | chemical analysis of natural sphene (variety keilhauite) which contains appreciable A1+a, Fe +a, y+a...note that perovskite rarely if ever occurs with feldspar, and suggest that the perovskite-sphene reaction...a controlling factor in the crystallization of feldspar-bearing rocks. Smith (1970, p. 267) reports that...(Schairer Volume) 267A, 509-549 (1969) Young, J.A.: Keilhauite, a guide mineral to the Sterling granite gneiss |  | | Journal (article/letter/editorial) | | detailed study of mineral compositions of alkali feldspar metasomatites and country rocks at their contact...granitic pegma tites in Sweden, in the same rocks in Norway, and in hydrothermalites related to granites in...metasomatites of the Ukraine [5, 16], in alkali rare-metal feldspar metasomatites in an area in East Sibera [1, 4...one sporadically finds newly formed minerals: keilhauite, apatite, and chevkinite, and in particular rare-earth...metasomatites; 2-5) pegmatites: 2) Ukraine[5], 3) Japan, 4) Norway, 5) Kola Peninsula [3]. 1090 5.88 2.25 4.90 |  | | Report (volume) | | W. and dips 44° E. Porphyroblastic quartz and feldspar stand out in slight relief on weathered surfaces...muscovite, chlorite, zircon, apatite, pyrite, and keilhauite. Moore (Written communication, 1961) reports...biotitelean; some exposures show augen-shaped feldspar, others do not. Foliation is present in every...quartz-biotite schist. Within this zone, potassium feldspar content and grain size increase, and biotite decreases...it has a few relict detrital rock fragments and feldspar grains, and contains garnet in places. Some of |  | | Book (edition) | | Nephelite, Sodalite, Leucite 296 302 303 304 306 Feldspar Group 8. Subsilicates Chondrodite Tourmaline...of Silica III. Crystalline 468 B. Containing Feldspar, Mica, Leucite, Nephelite, Sodalite, or other...a. b. 469 species 469 Potash-Feldspar and Mica Series Potash -Feldspar and Hornblende or Pyroxene Series...Series 477 Potash-Feldspar and Nephelite Series, Hornblendic or not 478 d. Leucite Rocks, with or without...without Augite 479 e. Soda-Lime-Feldspar and Mica Series 480 /. Soda-Lime-Feldspar and Hornblende or Pyroxene |  | | Book (edition) | | triclinic species. In f 229, of anorthite, of the feldspar group, the form is very similar to those of the...the monoclinic in orthoclase, O on the brachy feldspar, orthoclase diagonal (clinodiagonal) section is...these be not triclinic, as, for example, in the feldspar family ; and 2, the ease of calculation, which...to which the peculiar character of aventurine feldspar is due. Magnetite is a very common impurity for...orthoclase crystals in a porphyritic granite the feldspar, quartz, etc., sometimes inclosed in 358 large |  | | Journal (article/letter/editorial) | | granodiorite with oligoclase or oligoclase-andesine feldspar and partly a biotite granite. Subsequent tectonic...cyrtolite, yttroepidote and orthite, xenotime, keilhauite, monazite, RE-Th-apatite, etc.) in the granitoids...aplites, amazonite and normal pegmatites, and quartz-feldspar and quartz veins. The anatectic rocks are accompanied...often finds pegmatoid segregations of quartz, feldspar and amphibole, in places with zircon, gagarinite |  | | Book (edition) | | oxidised iron grain, silicates (dark grey); Basalt Quarry Bühl, Weimar near Kassel, Hessen, Germany (sample:...goethite (?, dark line), silicates (dark grey); Basalt Quarry Bühl near Kassel, Germany (sample: Hanel/Altherr);...part of grain), silicate matrix (dark grey); Stahl quarry, Dörrmorsbach, Aschaffenburg, Spessart, Franken...bornite (pinkish), dolomite (dark grey); Dolomite quarry, Rędziny, Czarnów, Rudawy Janowickie Mts., Lower...of troilite, silicate matrix (dark grey); Basalt Quarry Bühl near Kassel, Germany (sample: Hanel/Altherr); |  | | Book (edition) | | anorthite, of the feldspar group, the form is very similar to those of the monoclinic feldspar, orthoclase...these be not triclinic, as, for example, in the feldspar family ; and 2, tlie ease of calculation, which...orthoclase crystals in a porphyritic granite ] or the feldspar, quartz, etc., sometimes inclosed in large coarse...the position of the tourmaline and that of the feldspar. Similar occurrences are those of trapezohedrons...to known species they are called, for example, feldspar microlites, etc. Crystallites is an analogous |  | | Report (volume) | | active quarry near Lime Rock (the old Harris quarry), and the other is at the abandoned quarry about a...a mile east (the old Dexter quarry). Several other beds in the Pawtucket quadrangle and in the Providence...Rhode Island rocks Continued Quartz Potassium feldspar Plagio- Biotite clase Muscovite Accesseries...0 22.7 72.0 1.3 1.3 1.2 Quartz Potassium feldspar Plagio- Biotite clase 0. 7 A. W. Quinn, unpub...21.4 22.5 22.4 16.7 24.0 4.7 Quartz Potassium feldspar Plagioclase 11.6 1.9 .......... 2.9 ....... |  | | Book (edition) | | Menzenschwand Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from...to Hot Springco., Arkansas, in the Point of Rock quarry, pearly. Clea,·age {001} perfect. {100} and {010}...752. 8.85.5.85.Z = 4. d: 4.1(7)- 3.16(10)- 259(7) Norway, abundant at Norra Karr, Jonkoping prov., - 233(7)...mineral of alkaline rocks in the Point of Rocks quarry, Colfax co., New Mexico, with aegirine and arfvedsonite...Stavem, and Tvedalen, all Langesundsfjord, Vestfold, Norway, and at Narssarssuk and at Naujakasik, Ilimaussaq |  | | Book (edition) | | 87. liver. Hexagonal prism, 27. Containing feldspar Hexagonal system, 33, Feldspathic. Of the same...Homogeneous. ture and nature throughout. sisting of feldspar. Red with yellow Ferruginous. [Lat. /em/m, iron...whitish or reddish parlimitation here stated (feldspar) will be easily distinguished from others (quartz)...mica is found, this peculiarity is constant. feldspar in the same rock, if examined with care, will...of glass, though somewhat pearly. It is true of feldspar also, that this cleavage is a constant character |
|
Feldspar Quarry, Buøya, Arendal, Agder, Norway