 | | Journal (article/letter/editorial) | | Oregon; argyrodite (a silver sulphide germanate), Germany, Bolivia. On the other hand, there are many well...crystalline, igneous rocks are exposed at surface (granite, pegmatite, crystalline, schists, quartz or limestone...in Colyn region W. of r. Dniepr. ANDREASBERG, Germany, S E Oberharz mountain range, lead-zinc deposit...hormotone, analcime, desmin. FREIBERG, Saxony, Germany, old famous mineral, classic locality. Native silver...stephanite, arsenopyrite xls, tetrahedrite xIs, also fluorite, barite and other minerals. Freibergite, var. |  | | Journal (article/letter/editorial) | | Libraries, Kingston"] at 08:14 13 August 2013 Fluorite in Granitic Pegmatites MARK IVAN JACOBSON 1714...octahe- dral or cubic fluorite crystals perched on earlier-formed minerals. Fluorite is almost always a...quartz are enhanced by a purple or green cube of fluorite hanging from a crystal face or nestled on a crystal...Index map showing the major worldwide pegmatitic fluorite localities, prepared by William Besse. The numbers...ROCKS & MINERALS Figure 1. Fluorite, 10 × 7.2 × 5.7 cm, from the Conway Granite, near Red Stone quarry, |  | | Journal (article/letter/editorial) | | and Fossil Areas In Germany By DR. WERNER LIEBER Dante Str. 50, Heidelberg, Germany In the January-February...to find out if there are any mineral clubs in Germany. Since this number of R&M was sent to the readers...these questions and to give an idea of the present situation here in Germany. The last question of Mr....answer. In Germany exists one club like the R&M Association. Its name is "Vereinigung der Freunde der Mineralogie...the association is Dante-str. 50, Heidelberg, Germany. The club publishes a monthly magazine for collectors |  | | Journal (article/letter/editorial) | | Cambridge Ave., Menlo Park, Calif., also sends in an interesting item as follows: "On page 569, Nov-Dec... ROCKS AND MINERALS terial on the beach. No. 3 is an attractive yellow jasper which comes from the ledge...through the Southern States, including Florida, I have an item which seems to be appropriate for the 'World...to the Georgia Geological Survey (Atlanta, Ga.), an intere->;ng specimen of amazonstone from Rabun County...be found thus far in Georgia. It was obtained from an old mica mine about 7 miles from Clayton, and may |  | | Book | | Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...COLUMBIA Ice River complex. The Ice River complex is an intrusive body of alkaline igneous rocks where sodalite...ilmenite specimens have come from an unusual calcite vein-dike occurrence with an exposure very near, indeed...2008, when extensive blasting for construction of an extension to High,, ay 5 revealed veins of massive...Alberene and Old Dominion quarries, Albemarle County. In these two soapstone quarries, tabular ilmenite crystals |  | | Journal (issue) | | were invited to fill a display case with British fluorite specimens, to be judged by Alan Hart of the Natural...results were spectacular. T Since the theme was fluorite, north-of-England localities featured extensively...Isles. Ian produced a superb display containing fluorite from Comish localities, Wales and northern England...less well known fluorite localities. Peter assembled a superb collection of fluorite in pastel shades...crusts. A couple of photographs of the mine provided an interesting backdrop. Simon Harrison produced a stunning |  | | Report (volume) | | ..................................... 7 9 9 Granite proper................................................................ Text-book references on granite and black granites.................. Special features...texture and colors............................... Granite discoloration, its causes........................................ Dikelike masses of schist in granite.............:.................... Riebeckite and...minerals on joint faces......................... Granite contacts in relation to sheet and flow structure |  | Davison, E.H., Dines, H.G., Leese, C.E., Owen, D.E. (1938) Easter field meeting, 14th–21st April, 1938, Cornwall. Proceedings of the Geologists' Association, 49 (4) 385-391 doi:10.1016/s0016-7878(38)80003-1 | Journal (article/letter/editorial) | | it that carries Upper Culm ro cks over Lower Culm and in pl aces ev en on to Devoni an . The coac hes...the extensive peneplain at 1,0 00 feet, and the granite heights of Brown Will y and Roughtor rising above...phyllites-the lowest members of the Upper Devonian of the district, were given close attention in Hodge's...plentiful and a thick bed of pyrrhotite was sampled. An older exposur e y ielded axinite, epidote and zoisit...p eriod was availa ble for Barras Nose with the Upper P ROC . G E OL. Assoc., VOL. XLIX., PART 4 |  | | Journal (article/letter/editorial) | | minerals from the Castle Dome District of Yuma Co., Ariz. The specimens are fluorite (group of small grayish...galena (lustrous cleavage mass with faint purple fluorite cleavage) ; vanadinite (lustrous, drusy, brownish...They were very much shaped inside like the inside of an old fashioned iron cooking pot. In other words, a...feet, as I remember. Too, they were very close to an off-set of about eight inches, and on the down side...Hampton. A few of the octahedral crystals measure % of an inch on a side. The locality is again being worked |  | | Journal (issue) | | JANUARY–FEBRUARY 2019 Articles The Almadén mining district, Ciudad Real, Spain ............................other young collectors, and visited some local quarries in search of specimens, though he initially found...established an antiquarian book dealership on the side in Bayville, New York, as well as an auction subsidiary...photography and travel. He died on June 12, 2018. 3 Fluorite, Frunthorn, Vals Valley, Switzerland, 5 cm Photo:... Maharashtra, India 6 cm The Almade;n Mining District, Ciudad Real, Spain Borja Sainz de Baranda Graf |  | | Journal (article/letter/editorial) | | Pune (Poona), Mahavashtva, India T he zeolites are an interesting and quite pleasing group of minerals...several decades from the famous Deccan basalt quarries of India, and, in keeping with the zeolite theme...and { l l O } cleavages, is brittle, and exhibits an uneven fracture. Its hardness is 5-5.5, and its measured...calcium aluminum silicate with the Dr. Robert B. Cook, an executive editor of Rocks & Minerals, is a professor...Massachusetts. It has been reported from the traprock quarries of New Jersey, including those at Edgewater, Bergen |  | | Report (issue) | | Mineral, der lebhafte Edelstein with the permission of Christian Weise Verlag, Munich, Germany German...German Edition © Christian Weise Verlag, Munich, Germany ISBN 3-921656-42-7 Printed in the United States...2.52 carats) from Katlang, Pakistan, adorn the upper wings, with a matched pair of pink Russian topazes...forms desirable collector specimens. The mineral is an aluminum fluorosilicate with the composition Al2SiOiF...the Bergakademie (Mining Academy) in Freiberg, Germany. This box belonged to and is signed by Hans von |  | | Journal (article/letter/editorial) | | 4 feet wide that run for approximately % mile in an east and west direction. A cold chisel or crowbar...Colorado—An occurrence for triboluminescent sphalerite is a lead-silver mine in the Silverton district, San...Eugene VanderWender, Harrington, Kent County, Del. District of Columbia—French Morgan, of Washington, D. C...another very unusual find of petrified wood, in the District this time, and within a half mile of where I live...cleavable masses of calcite, white to purple masses of fluorite, lustrous cleavable masses of galena, and deep |  | | Book | | SITES IN DERBYSHIRE—John and Joan Lawson PEAK DISTRICT—John Lawson THE CURSE ON THE MAGPIE-Peter Rodgers...course, is famous for its fluorite minerals. Good specimens of massive fluorite are available but of interest...this country’s mineral wealth. Tin from Cornwall, fluorite from the Midlands and the North, are booming as...happen in Weardale, where there is a brisk trade in fluorite minerals. Last October at the Becermet Mine in...course, is famous for its fluorite minerals. Good specimens of massive fluorite are available but of interest |  | | Report (volume) | | ______ PABT I. Scientific discussion_______ _ Granite proper______________________ General features____...examples_________________ Fluidal cavities in granite gneiss.________ Fluidal cavities in small dikes...Colors______________________________ 80 Olive-green granite ___________________ 81 Minerals on joint fac... Physical properties _ Textbook references on granite and " black granites " PAI*T II. Economic discussion_...discussion_ General features________~ __ Tests of granite _ Chemical analysis Determination of CaCOs Test |  | | Journal (issue) | | ................................................ AN INVITATION FROM A CANADIAN MEMBER. By Bob Hadden.................................... INTERESTING FLUORITE FOU ND IN KENTUCKY ..................................................................... ....... AN EMERY OCCURRENCE IN AUSTRA LIA ....................of quiries have been received regarding the the District of Columbia, to whom a trip - did the Editor have...Rocks and 111ineraJs, we announced that the offices AN INVITATION FROM A CANADIAN MEMBER By 808 HADDEN Aldersyde |  | | Report (issue) | | Vanadinite on siderite, 4.6 cm, from Taouz, Tafilalt district near Erfoud, Morocco. Fabre Minerals specimen...the famous Bou Azzer, Ouarzazate cobalt-mining district, and Jordi has six of these specimens, 6.4 to...four miniatures now visible on Jordi’s site, “from an exceptional find in 2010” in the Bouismas mine, show...new locality in Malawi called Mount Mulanje, a granite inselberg in the southern part of the little country...me at that time that the Mount Mulanje deposit is an 6 ============================================================ |  | | Book (volume) | | in Knox dolomite exposed in an abandoned quarry Barite, Calcite, Fluorite (purple cubes), Galena. CHATTAHOOCHEE...areaQuartz crystals. LITHONIA: area quarriesCalcite, Epidote, Fluorite, Garnet, Thulite, Tourmaline, Zeolites;...Quarry, on N side of Arabia Mt.Calcite, Epidote, Fluorite, Garnet, Thulite, Tourmaline, Zeolites; N side...MOUNTAIN: two area granite quarriesBeryl, Feldspar, Hyalite opal; area granite outcrops, in jointsUranophane...Elberton and Hartwell in Hart Co. The known mica district includes some 250 sq. mi., with most mining revolving |  | | Report (issue) | | Maximilian Glas, Starnberg, Germany Printer Mediahaus Biering, Munich, Germany English Edition © 2005 by... extraLapis No. 20: Inset Elba Die Urlaubsinsel der Mineralogie Photo Credits Cover: Elbaite 5.4 cm...Weise Verlag, Munich, Germany German Edition © Christian Weise Verlag, Munich, Germany ISBN 3-921656-57-5...3-921656-57-5 Printed in Germany The Italian Island of ----- A Mineralogical Jewel in the Tuscan Archipelago... The Italian Island of Elba Table of Contents Page 4 An Island Steeped in History Federico Pezzotta Page |  | | Journal (article/letter/editorial) | | localities in Europe, with more than forty active granite quarries that yield numerous pockets every year (Korber...every few years. Although the Strzegom region is an area of high mining activity, it is known to most...microcline, quartz, stilbite, chabazite, chlorite, fluorite, and calcite (Janeczek 2007). From the collector’s...Strzegom minerals that are especially valued are fluorite, smoky quartz, feldspars (often as Baveno twins)...of Strzegom area (approximate area of occurring granite intrusion) with Żółkiewka I quarry noted. map |  | | Journal (article/letter/editorial) | | provinces are arranged in the overall structure of an arch, with the oldest rocks appearing in the central...marcasite. A major mining district, the Upper Mississippi Valley zinc-lead district, was in these rocks in...and copper minerals were found. Mining in this district ceased in the late 1970s. A branch of the Middle...prehnite, laurnontite, and datolite) found in the Upper Peninsula of Michigan also occur in Wisconsin. The...Wisconsin. Some of these rocks are pegmatitic and yield an interesting and diverse group of rare minerals (phenakite |  | | Book | | Hilltop sites last year sold at around $600,000 an acre for office-park development, according to professional...the cheapest land, on back roads, costs $200,000 an acre. But the value of this land now turns out to...Hills Tennis Club. To a geologist, Gleba explained in an interview, rust on rock means iron inside. Iron usually...beterence &roll which the inforllation i. dran,e An t ...ple would be (26(42 43'33",70 §3'53")406,aa...overla1a by fine brewn and gray sands. outcrop in an undulatiag layer for aeveral hundred f ..t ••• The |  | | Journal (article/letter/editorial) | | have gotten around to make up which will give you an idea of how fantastic these Tridymites really are...quartz J have yet seen." CALIFORNIA—The limestone quarries in Crestmore Riverside Co., Calif., considered...area, we have closed the Commercial and Lonestar quarries to collectors. W e feel that with blasting and...calcite cleavages. I did find in the Jensen pit in an area which has now been mined out a rather nice pegmatite...been partially responsible for the forming of such an opinion. "I am telling you about the tourmaline |  | | Book (volume) | | Illinois geology. These measures constitute the Upper Carboniferous system of repeated alterations of...City Geode Location WARSAW, area rd. cuts, pits quarries, gravels, banks along regional creeks and streams...crystals, Fluorite (blue, yellow, purple, clear), Sphalerite; d the Empire and Fairview mines⎯Fluorite, Galena...rd. 2 mi. to the Mahoning Mine No. 3, on dumps⎯Fluorite crystals; g Fairview Landing, area mines⎯Cerussite...Pittsburg, McClellan, etc.⎯Cerussite, Chalcopyrite, Fluorite, Galena, Pyrite, Silver, Smithsonite, Witherite |  | | Book (volume) | | Illinois geology. These measures constitute the Upper Carboniferous system of repeated alterations of...City Geode Location WARSAW, area rd. cuts, pits quarries, gravels, banks along regional creeks and streams...crystals, Fluorite (blue, yellow, purple, clear), Sphalerite; d the Empire and Fairview mines⎯Fluorite, Galena...rd. 2 mi. to the Mahoning Mine No. 3, on dumps⎯Fluorite crystals; g Fairview Landing, area mines⎯Cerussite...Pittsburg, McClellan, etc.⎯Cerussite, Chalcopyrite, Fluorite, Galena, Pyrite, Silver, Smithsonite, Witherite |
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