 | | Journal (article/letter/editorial) | | ICELAND SPAR IN NEW MEXICO VrNcnur C. Knr.r.nv, Llniaersity oJ New Merico, Albuquerque,New Me*ico....while prospecting the ridge south of the Harding mine, Juan A. Brown of Dixon, New Mexico, uneartheda...undoubtedly ruined some of the near-surface Iceland spar in the deposit, but exposure in this manner...Harding mine, producer in the past of trimmed mica, Iepidolite, and spodumene.The Iceland spar mine lies...lies about 400 feet southwest of the Harding mine quarry, at an elevation of 7500 feet. Although discoveredas |  | | Journal (article/letter/editorial) | | com/locate/epsl Silicate versus carbonate weathering in Iceland: New insights from Ca isotopes Andrew D. Jacobson...Editor: J. Lynch-Stieglitz Keywords: Ca isotopes Iceland chemical weathering long-term carbon cycle isotope...riverine fluxes of Ca and carbonate alkalinity in Iceland with the aim of quantifying the role of basalt...However, hydrothermal calcite occurs throughout Iceland, and even trace levels are expected to impact river...groundwater, basalt, hydrothermal calcite (including Iceland Spar), and stilbite and heulandite, which are two |  | | Other Paper | | Far-Eastern Region, Russia. Below: Left to right: Various specimens of quartz and Iceland spar studied...set; Leif Karlsen’s large cleavage rhomb from Iceland, subject of his 2003 book Secrets of the Viking...Karlsen held his 65 x 45 x 35 mm cleavage rhomb from Iceland which he used to test his theory of calcite’s use...candidates 2 for the stone. Among them are “Iceland Spar” calcite of which a coveted optical-quality...optical-quality variety was found abundantly in eastern Iceland, and the blue variety of the mineral cordierite, found |  | | Journal (article/letter/editorial) | | using a calcite standard (calcite from Helgustadir in Iceland). The CL recording system consists of an... beam current density: 9 mA mm 2) (samples: Iceland spar calcite; Mn 198 ppm, Fe 248 ppm: calcite from...structures. Figure 2a shows two CL-spectra of ``Iceland spar'' calcite with 90 and 5342 ppm Mn2 respectively...Normalised CL-spectra of Mn2 -activated ``Iceland spar'' calcite with 90 ppm and 5342 ppm Mn. The high...sample with 90 ppm Mn is a characteristic of ``Iceland spar'' calcite. Less perfection of the crystallographic |  | | Journal (article/letter/editorial) | | Effects of trace cations naturally present in Iceland spar calcites A.O. Harstad a a,1 , S.L.S. Stipp...experiments on a set of pure, optical quality Iceland spar calcite samples from four different localities...these results show that pure, optical quality Iceland spar calcite should not be considered pure in the...calcite fragments cleaved from optically pure ‘‘Iceland spar’’ but most published reports neglect to present...Materials Four samples of optically transparent ‘‘Iceland spar’’ calcite were selected. All were colourless |  | | Journal (article/letter/editorial) | | illustrations of calcite from the Tertiary basaltic region of the North Atlantic in Goldschmidt's Atlas (1913)...writer's observations in the Tertiary basalts of eastern Iceland suggest that in fact the Antrim type of habit...of the local type. Thus the well-known Helgustadir Iceland Spar deposit is situated in altered basalts |  | | Report (volume) | | area_____________________________________ Cartwright Crystal Spar group______________________________ Cartwright Calcium...35. 39. Geologic maps and section of the Bodine mine. 40. Sketch map of the Briebach property. 41. Geologic...Geologic maps and section of the Cartwright Crystal Spar group. Figure 48. Cross section of vein showing...yielded only slightly more than 600 pounds of optical spar and mineral specimens before World War II. During...Montana was apparently on the Cartwright Crystal Spar group (pi. 23, no. 10) near Greycliff and Big Timber |  | | Report (issue) | | cm high calcite twin on {1 OTI} from the Leiping mine, Guiyang County, Hunan, China. Collection Frederic...cm high calcite twin on {1 OTI} from the Leiping mine, Guiyang County, Hunan, China. Collection Frederic...Uneven to conchoidal Density Pure calcite (Iceland spar) has a density of 2.71 g/cm3. Other samples... has had numer ous names such as calcspar, Iceland spar and others depending on habit, inclusions or...largest crystal is 4.3 cm long) is from the Droujba mine in Laki, a small town set in Bulgaria 's Rhodope |  | | Journal (article/letter/editorial) | | Sr isotope geochemistry of basalt weathering in Iceland: Role of hydrothermal calcite and implications...Sr isotope geochemistry of basalt weathering in Iceland: Role of hydrothermal calcite and implications...Sr isotope geochemistry of basalt weathering in Iceland: Role of hydrothermal calcite and implications...of the basalt weathering feedback occurring in Iceland may be lower than previously realized. To test...Li et al., 2016), with a considerable focus on Iceland (Gislason et al., 1996; Moulton and Berner, 1998; |  | | Report (issue) | | for keeping us in touch with developments in that region. The crucial latest steps are that Halcrow have...brought to Combe Down by conveyor from Stoke Hill mine or Midford Hill Farm. If the Combe Down mines quarries...was 110 feet tall - is not known." In the Harrer region to the east of the country the caves are noted...inhumanity to man. For example, back in the Tigre region, vase cave contains broken vases left by women...century. At Melkay Mara in the Bale region and Serkema in the Harrer region there is evidence of the Italian |  | | Journal (issue) | | and collect am ber. I take this new liberty of mine to say that amber continues to be found in Poland...and stretching along the Leba dunes and Gdansl< region, they reach the Vistula Spit beyond Krynica Morska...Carson I. A. Ritchie ICELAND SfR RUKJAVI HOLSMYRI VIK There are no rockshops in Iceland. You have to visit...collecting. This is a very pleasurable experience. Iceland is so undeveloped that every thing offers the...originated. . Because of its very long coastllne, Iceland offers particularly fine beaches, such as the splendid |  | | Journal (issue) | | long in clusters were mined at the Mashamba copper mine, in Zaire. When they were introduced at major shows...Arizona, comes to mind immediately, as the Southwest mine produced some of the most handsome, multi-inch,...the world’s finest—have come from the Milpillas mine, in Sonora, Mexico. Actual mining of this deep deposit...were discovered there, and from 2006 to 2012 the mine produced huge quantities of the world’s finest azurites...inpection reveals the crystal rosettes. (Tsumeb mine, Namibia) irocks.com degree. The terms “botryoidal” |  | | | | Homestake Mine, South Dakota; in Montana and Arizona. Also in Ural Mts., U.S.S.R.; and at Waihi Mine, New...New Zealand. In Australia, at Mount Morgan Mine, from Chartres Towers district, from Hillgrove, from Hill...Luning and Cuprite in Nevada; at Sulphur Bank mercury mine and at Lassen Peak, California. Sharp well-shaped...at Conil. Found frequently around volcanoes in Iceland, Japan, Hawaii, Mexico, and South America. 20...unusual crystals at Carn Brea Mine, Cornwall, England. Found at Wanlockhead Mine in Scotland, and also at |  | | Book (edition) | | Homestake Mine, South Dakota; in Montana and Arizona. Also in Ural Mts., U.S.S.R.; and at Waihi Mine, Mine...and Cuprite in Nevada; at Sulphur Bank mercury mine and at Lassen Peak, California. Sharp well-shaped...at Conil. Found frequently around volcanoes in Iceland, Japan, Hawaii, Mexico, and South America. 20... England. Found at La Bufa, Brea Mine, at Wanlockhead Mine Scotland, and also at Wallaroo, South...regions. In USS., fine crystals in calcite at Cahill Mine, Nevada. Also at New Almaden and New Idria Mines |  | | Journal (issue) | | Scotland. The best moss agate comes from the Hindustan region of India; there have also been significant moss...emeralds. Most of the alexandrite from the Urals region has now been excavated and the original sources...concentration of amethysts is the Rio Grande do Sul region of Brazil. Other significant deposits are found...in Spain (it ta kes its name from the Andalucia region of Spain) it is a fairly widespread mineral that...brownish-red colour is typical of samples from that region. Below: Two cut andalusite gems: below left, cut |  | | Journal (issue) | | 2017 CALCITE & ARAGONITE CaCO3, 5.3cm, Wenshan Mine, Wenshan Autonomous Prefecture, Yunnan Province...Mineral Associations 3. Mineral occurrences in a region 4. Mineral occurrences in a country Photographs...Photograph gallery 3. Mineral photographs in a region The Rockhound Record, Volume 76, No. 9, November...of “The Alma Rose” Rhodochrosite and Sweet Home Mine, please visit following: https://www.collectorsedge...Zn)2] Sb4S13, “The Alma Rose,” 46.5cm, Sweet Home Mine, Alma, Park County, Colorado, USA; Rice Museum of | | | | | hydrotalcite 51 hydrozincite 47 hydroxides 23 ice 23 Iceland spar 45 _ idocrase 88, 88, 89 ilmenite 26, 28 ilvaite...Silicified. Impregnated with silica Spathic. Like spar Sphenoid. Wedge-shaped, with four triangular faces...deposits in the United States are in the Adirondack region of New York. Its high melting point makes it suitable...especially near Kimberley); diamonds from the Kimberley mine are embedded in ultrabasic blue rock called kimberlite...carats, equal to 621 grams) was found at the Premier Mine; named the Cullinan diamond, it was presented to |  | | Book | | hydrotakite 51 hydrozincite 47 hydroxides 23 ice 23 Iceland spar 45 idocrase 88, 88, '89 ilmenite 26, 28 ilvaite...59 zippeite 62 zircon 77, 78, 78 zoisite 88 THE MINE LKINGDOM All physical bodies in Nature can be...Silicified. Impregnated with silica Spathic. Like spar Sphenoid. Wedge-shaped, with four triangular faces...or slightly rotated Vitreous. Like glass 3 THE MINE Class I: native ·elements Chemical elernents found...deposits in the lJnited States are in the Adirondack region of New York. Its high melting point makes it suitable |  | | Journal (issue) | | Hazen The best grossular garnets from the Jeffrey mine, Asbestos, Quebec ........ .......................1972, and considered to be the finest known Jeffrey mine grossular specimen. Marco Amabili collection; James... Colorado (two), New Mexico (the Bingham Canyon mine), Nevada, Arizona (two), Mexico, Brazil, Northern...in the Czech Republic, the Carpathian Mountains region, Laurium, Morocco, Namibia (two), Tsumeb (two)...COLUMBIA Beaverdell [Highland Bell] mine, Beaverdell. The Beaverdell mine is one of several small mines in |  | | Book | | times, and there is evidence of at least one flint mine dating from this period. Finely worked and polished...changes within the crust, covers a wide area, or region. The slaty texture is very marked in the epi- and...largest diamond ever found was the Cullinan (Premier mine, 1905), of 3,106 et., or 621.2 grams; from it were...time. Very few pipes are worth working. The Premier mine produces 1 million carats a year. Alluvial deposits:...USSR- since 1949, gravels and pipes in Yakutia, Eastern Siberia have yielded much diamond. Small diamond | | | | | James’s Place, London The picture of manganese spar on the jacket of this book is an enlargement of...The word mineral comes from the Latin minare, to mine, and originally designated minerals and rocks so...raspberries, on encrusting honeycombed limonite. From Wolf mine, Herdorf, near Betzdorf in valley of the Sieg. Rhodochrosite...Sulphur S orthorhombic. Scale 1:8:1 6 BaRyTES (heavy spar) blue, translucent, tabular crystals. On the right...reddish coloured compact barytes. From Sophia mine, Wittichen, Black Forest. Calcite from Latin |  | | Book | | together into one of the six regional federations—Eastern, Midwest, Rocky Mountain, Southwest, California...as gold and silver. Minerals from one state or region (perhaps the Rocky Mountains, Death Valley, or...by his discovery of the world’s largest diamond mine. Nevertheless, the amateur will surely find many...components. Obsidian, an abundant rock in Mexico and Iceland, is natural volcanic glass. Organic products of...building up a cone or crater, as It still does in Iceland. More than 500 volcanoes have erupted within recorded |  | | Book | | James's Place, London The picture of manganese spar on the jacket of this book is an enlargement of...The word mineral comes from the Latin minare, to mine, and originally designated minerals and rocks so...raspberries, on encrusting honeycombed limonite. From Wolf mine, Herdorf, near Betzdorf in valley of the Sieg. Rhodochrosite... Sulphur S orthorhombic. Scale 1·8:1 6 (heavy spar) blue, translucent, tabular crystals. On t> the...violet or brown-coloured crystal edges. From Cecilia mine, WOlsendorf, Upper Palatinate, Bavaria. Fluorite |  | | Book | | CRYSTALS mineral comes from the Latin minare, to mine, and originally designated minerals and rocks so...raspberries, on encrusting honeycombed limonite. From Wolf mine, Herdorf, near Betzdorf in valley of the Sieg. Rhodochrosite...Sulphur S orthorhombic. Scale 1°8:1 6 BARYTES (heavy spar) blue, translucent, tabular crystals. On the right...and reddish coloured compact barytes. From Sophia mine, Wittichen, Black Forest. Calcite from Latin calx...violet or brown-coloured crystal edges. From Cecilia mine, Wo6lsendorf, Upper Palatinate, Bavaria. Fluorite |  | | Book (edition) | | Canyon material is available, the evidence for this region will be summarized. According to Brand, Hawley... Serpentine Turquois and 19 additional Chaco region, but the following a total of 40 minerals, including...Kluckhohn and Wyman (1940). The area covered includes eastern Arizona as well as western New Mexico. Minerals...near Cerrillos and found mineral deposits in this region. They also visited the Estancia salt lakes and...Mountains region. At Zia, Indians gave them ore, presumably of copper, from the Jemez region (Bolton, |
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Helgustadir Mine, Reyðarfjörður, Fjarðabyggð, Eastern Region, Iceland