 | | Book | | look for. Michael O’Donoghue Proustite (East Germany) 7 Rocks We can define a rock as a large mineral...Darker and even poorer in silica than diorite is gabbro, containing a calcium-rich plagioclase and pyroxene...Granite Nepheline syenite Syenite Dio rite Gabbro Peridotite 13 Dunite Serpentinite Rhyolite...the fixed index (the ordinary ray) at a higher or lower reading than the moveable (extraordinary) ray. Where...incident beam are retarded by passing through to the lower side of the film, rejoining the main beam either |  | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert |  | | Book (edition) | | dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from the Rabejac deposit... = = = = = Acanthite, x 16 mm, Freiberg, Germany, H Abernathyite, 12 mm, Ririera/, France, H Abhurite...at the Himmelsftirst mine, Freiberg, both Saxony, Germany. In the subtropical areas acanthite may occur...byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31 |  | | Book | | shown. Page 1: Cluster ring (see page 69) Page 2: Cerussite “Light of the Desert” (see page 117) Page 3: Malachite...A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...manganese oxide on limestone, Solnhofen, Bavaria, Germany * 11.5 x 24 x 0.5 om MINERALS: PRODUCTS OF A...patterns that resemble the structure of a feather. Cerussite, Broken Hill, New South Wales, Australia * 7 x...3.785 g/cm? Atomic Weights Ca Sr witherite cerussite BaCO, PbCO, 4.308 g/cm 6.582 g/cm? Ba 137.36 | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned jn such a way that they form...that of the next lower grade. In this case we consider the hardness to be of the lower grade adding a half-grade...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert...should preferably be more detailed, e.g. walls of a quarry, or refuse heap specimen, so that one could find |  | | Catalog/List | | ALLEMONTITE An intergrowth of arsenic and antimony Germany Harz Mountains, Andreasberg Rich gray botryoidal...marble ..... . Connecticut Canaan, New England Lime quarry Silky white xl prisms in dolomitic marble .......Cochise Co. , Swisshelm district Rich brown to gray massive, some with minor cerussite, galena and linarite...South Wales, Broken Hill Drusy white xls with cerussite ............. Fl. Mexico Chihuahua, Villa Ahumada...aluminum silicate Calilornia Placer County, Grass Valley Hornblende Norite Broad white crystal sections |  | | Book (edition) | | scale to soapstone at the other. There is a still lower limit in liquids and gases; but of the hardness...the planes of the trisoctahedron in Fig. 21. The lower one of the three on the upper front solid angle...by a constant ratio, and the expression for the lower right one of the six planes will be 3c f & la. By...planes will remain essentially the same. In Fig. 10, bad the plane lettered | been made the plane 1, then...being here directly over those suppressed in the lower pyramid. APATITE. If the student will shade over |  | | Journal (article/letter/editorial) | | Ladysmith (Rosemeyer 1999, the Vulcan Materials quarry in Racine (Scovil 1994), the pegmatites of Florence...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...may have omitted. Adams County Hamilton Mound. A quarry is located in the NE 1/4 sec. 36 T*20N*R.6E.: potassium...converted to a hornfels at the contact with the Mellen gabbro complex: apatite, fayalite, ferroaugite, grunen'te |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...culture, derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric...minerals are concerned. Opal is still thought to bring bad luck, and similar stories are told about certain...of these fourfold axes in all. The considerably lower symmetry of a monoclinic crystal is shown in Fig...crystallographic symmetry of a body may often be lower than its apparent geometric symmetry. In a pyrite |  | | Catalog/List | | two earlier catalogues, but now offered at even lower prices. Additionally, I have included some specimens...golden-yellow nodule, A/20. ANALCIME. Enderby Quarry. Leicestershire. This specimen is more interesting...2.5x2x1.25", £4.00 1. ANALCIME/NATROLITE. Dean Quarry, St. Keverne, Lizard, Cornwall. Pearly white to...to about 0.75" in size developed on surface of Gabbro matrix plus, minor crystalline Natrolite and Calcite...75x1", £7.50. 2. ANALCIME/NATROLITE/CALCITE. Dean Quarry, St Keverne, Lizard, Cornwall. Pearly white, large |  | | Journal (article/letter/editorial) | | Authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. T h e m i...Aerugite, synthesis, 72; Cornwall, anal., X-ray, 72; Saxony, anal., X-ray, 72. Aeschynite-priorite series,...topotactic formation from y-CaSiOa, 347. Ankerite, Germany, topotactic decomposition of, 634. Anthoinite,...Arsenobismite, Brazil, 785. Artern, Sachseu-Anhalt, Germany, mellite, 542. ASWATHA~ARAYA~A(U.), Isotopic ages...(S.), see SARBADHIKARI (T. n.), 770. Bhilwara district, ]~ajasthan, India, scorodite, 776. BmaAR (G. |  | | Catalog/List | | APRIL 1974 1. NATIVE ARSENIC. Burraton Combe Quarry, St. Stephens-bySaltaoh, Cornwall. Specimen A -...Cassiterite with Quartz veins tuff. 2txl-}" • £4. 19. CERUSSITE. Broken Hill, New South Wales, Australia. Superb...very choice for display. 5x3~x2". £35. 20. CERUSSITE. La Croix-aux-Mines, Vosges, France. Attractive...intergrovm on Limonitic matrix. 3X2t". £4. 21. CERUSSITE. Pentire Gloze Mine, Polzeath, Cornwall. Lustrous...red, hackly sheet. ltx;\-". 50p. CUPRITE. Marke Valley Mine, Linkinhorne, Cornwall. h bright shining maroon |  | | Catalog/List | | CABRERITE (Magnesian Annabergite). Laurium, Attica district, Greece. Light green small sharp crystals lining...2x1tx1", £3.7Sp. 14. CALCITE. St. Andreasberg, Harz, Germany. Specimen A: Select translucent to transparent... A large geode-like cavity in calcite/ altered gabbro matrix lined with transparent creamy coloured well...~-x2t", £6. SOp 16. CARPHOLITE. Wippra, Harz, Germany. Rich golden coloured radiated crystalline masses...intergrown on matrix. 2-tx2tx2~", £3.7Sp 21. CERUSSITE. Redgill Mine, Caldbeck, Cumberland. Lustrous |  | | Book | | minerals are the raw materials of the landscape. Every valley, hill and mountain peak is made entirely of rocks...just 20km/12 miles beneath California’s Central Valley, it is substances like zinc and lead that join...so great that the iron simply cannot melt. The lower mantle is 6702,900km/420-1,800 miles down. Here...the underside of the crust, creating rocks like gabbro. Some oozes up into vertical cracks created by...drop away down these 'faults' to open up a rift valley, flanked by mountains formed from blocks that didn't |  | | Catalog/List | | A~GLESITE. 8. ATACAMITE. Copiapo, Atacama District, Chile. Rich, very dark, blackish green, bladed...If.xlt". f.l. 50. 9. AZURITE. Moldawa, Banat District, Hungary. Small, bright, blue sharp sparkling...}~-x2ixli". £l6.5o. NATIVE B~5MUTH. Schneeberg, Saxony, Germany. Very rich vein section consisting of feathery...£13.00. 15. BROCHANTITE. Mammoth Mine, Tintic District, Utah, U.S.A. Bright, deep green, small sharp...Pearce in 1903. 2-!;-xl~-". £8.00. CALCITE. Machen Quarry, Rudry, Glamorgan. Sharp, composite, translucent |  | | Catalog/List | | Sylvanite in Phonolite. Itxi". £2. ANALCIME. Dene Quarry, st. Keverne, Lizard, Cornwall. Large sno\1-white...sno\1-white intergrown crystals to 1" in size encrusting gabbro rock. 3tx3". £2. ANGLESITE. Poullaouen, Brittany...location. 3x3". £6. ARSENOPYRITE. Hingston Down Quarry, Gunnislake, Cornwall. A Itxl" cavity in massive...Sparkling blue crystals with minor Malachite and Cerussite forming thick coatings on and through limonitic...crystals completely covering a matrix of Quartz - Cerussite with minor Cuprite. 3x2". £5. BROOKITE. Magnet |  | | Book | | Council Glossary of the minerals of the Lake District and adjoining areas B. Young NEWCASTLE UPON...booksellers A Glossary of the Minerals of the Lake District and Adjoining Areas B. Young Introduction The...covered by this glossary includes the central Lake District , the adjoining west Cumbrian coal and iron ore...Ennerdale, Shap and Skiddaw form part. Sediments of Lower Carboniferous age, locally with some contemporaneous...wide area on the Wand N flanks of the Lake District. These Lower Palaeozoic rocks are succeeded unconformably |  | | Book | | understanding and enthusiastic publisher I have ever bad the pleasure of working with. I know that be joins...Meldonaplitequarry,nrOkehampton, Devon ~.~eldon ap::'te quarry,nrOkehamp:on. 0: ,0,1: roci...Bergemann in 1858 from Johanngcorgenstadt, Saxony, Germany, and named by G. J. Adams in 1869. They were...work (as chief collaborator on Kingsbury's Lake District "discoveries") is most affected by the problem...Cumbria (Ixer & Stanley 1987); a glossary of Lake District minerals (Young 1987a), which referenced many |  | | Book | | composition into an opaque amorphous mass with much lower properties, such as refractive index and specific...significantly reduced 18O content (down to <10%), much lower than the 18O composition of the solution after reaction...the apatite, with the presence of NaF producing a lower nucleation density, larger crystals and coarser...to end member FAP, whereas samples reacted with lower F content are probably replaced by hydroxy-FAP (Ca10(PO4)6OHxF2x)...between calcite and hydroxyapatite (13.4%) is lower than between calcite and FAP (14.7%). The replacement |  | | Book | | rolling topography. A pipeline excavation randownthe valley priorto landscaping during springI991.{Painting...Freiberg, Germany; Mr J. Williams, Dumfries; Mr S. C. Brownlee of Cumnock and Doon Valley District Council;...feature of the Lowlands is the fault-bounded Midland Valley, with Glasgow and Edinburgh in the west and east...respectiYely. In a broad sense, the Midland Valley is a swathe of lower ground abundantly dotted with hills between...estuaries to the Southern Uplands. South of the Midland Valley, virtually to the English border, high rounded |  | | Journal (issue) | | Administratively, the Imeretinsky site is located in the Urup district of the Karachay-Cherkess Republic, 60 km SW of...Jurassic Laura dike complex consisting of dolerites, gabbro-dolerites, porphyry dolerites, and ophite olivine-bearing...coatings and fine-grained crusts of anglesite and cerussite. Covellite is the only supergene sulfide that...is associated with caledonite , linarite, and cerussite. The mineral was identified using electron microprobe...anglesitc, beaverite-(Zn), gocthite , malachite, cerussite , and Zn-bearing chamosite. Sphalerite is a source |  | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As man y...minerals as possible are included in each group. The lower section of the margin bar is fitted with a scale...crystals, and weathered surfaces can give a false lower hardness. After the test scratch, a powder-like...zircon and sphene, where double refraction at the lower edge of the crystal can be observed with the naked... 3◄ 4 ◄ 5 ◄ Sassolite boric acid G) Death Valley, California/ USA B(OHb Streak white. Mohs' hardness |  | | Book (volume) | | ' This Kupferschiefer is cases. lean in this district, carrying only 1.4% of copper, and no silver,...fissures known as 'rucken' in the Mansfeld copper district also contain occasional nickelite, together with...examples of this type is the cobalt district of Schneeberg, in Saxony, a mountainous region 1,300 to 1...present. Besides quartz-cobalt veins the Schneeberg district contains quite a 3 variety of vein types, which...Schneeberg, cally important deposits of the entire district. the veins are so crowded together in an area |  | | Catalog/List | | fibrous mass 5x3 Edwards, Balmat-Edwards Zinc District, St Lawrence Co., New York, USA. £7 6 MOHAWKITE...this very rare feldspar on a fme grained greyish gabbro Kurumazawa, katashina Gumma prefecture Japan 5...It's about lm thick Cassagna Mine, Ne ,Graveglia Valley, Liguria Italy, I collected it in 2019. £18 14...pale green plates on Monticellite 4x3cm Crestmore Quarry, Riverside county California USA £10 2 33 DOLOMITE...limestone form the classic Solenhofen location in Germany 8x5cm £25 80 MUSCOVITE on feldspar slightly curved |  | | Book (volume) | | reserved. H., Hofbuchdruckerei, Cothen-Anhalt (Germany). Translation This book has book of but ...122. Pyromorphite 130. Sulphur of 120. Cerussite 126 52 Use 115. Amalgam, Cinnabar Ores ...Mimetite, 19. Various Native I. II. Galena, Cerussite, III. Phos- dorffite, Tungsten, Millerite...Bieber, limestone may, and instead crystals quarry dissolved a such undergo disappears, call...Co. prism faces Germany. Cube crystal-form. Weardale, 5. of Harz, The Germany. (bright crystals |
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