 | Peřestý, V., Lexa, O., Holder, R., Jeřábek, P., Racek, M., Štípská, P., Schulmann, K., Hacker, B. (2017) Metamorphic inheritance of Rheic passive margin evolution and its early-Variscan overprint in the Teplá-Barrandian Unit, Bohemian Massif. Journal of Metamorphic Geology, 35 (3) 327-355 doi:10.1111/jmg.12234 | Journal (article/letter/editorial) | | the major Variscan suture that is marked by the occurrence of HP/UHP rocks in the Saxothuringian domain...metamorphic field gradient manifested by biotite, garnet, staurolite and kyanite zones (Fig. 2) with estimated...et al., 2001), the common occurrence of two compositional varieties of garnet (Žáček & Cháb, 1993; Zulauf...g. presence of two garnet generations (garnet 1 and garnet 2), result in two garnet isograds related to...and quartz in garnet 2 (Figs 2 & 3b). Two microstructurally and chemically distinct garnet generations |  | | Report (issue) | | .............................................4 Garnet ................................................. 3. Scanning electron micrographs of detrital garnet etch-stages from the Westwater Canyon Member of...smooth, unetched garnet; (b) garnet with mammillary surface texture; (c) slightly etched garnet showing dodecahedral...dodecahedral etch-surfaces; and (d) severely etched garnet....................7 4. Photomicrographs of euhedral.....12 7. Photomicrograph of etched, detrital staurolite..................l3 TABLES Table 1. Elongations |  | | Report (chapter) | | (Barrovian) assemblages (characterised by kyanite and garnet) and relatively low pressure (Buchan) assemblages...3SiO2-H20 (KFMASH) of Thompson (1957). In particular garnet may occur as an additional phase in many of the...Sillimanite . . . . . Lower Grade Zones Cordierite ~ Garnet ~ StauroJite 'Highland Boundary Fault £ Chloritoid...components are also responsible for the presence of garnet in some of the assemblages where it is listed in...Table 1. The refractory or non-reactive nature of garnet (Hollister 1969, p.2489, and Atherton & Brotherton |  | WHITNEY, D. L., TEYSSIER, C., TORAMAN, E., SEATON, N. C. A., FAYON, A. K. (2011) Metamorphic and tectonic evolution of a structurally continuous blueschist-to-Barrovian terrane, Sivrihisar Massif, Turkey. Journal of Metamorphic Geology, 29 (2) 193-212 doi:10.1111/j.1525-1314.2010.00915.x | Journal (article/letter/editorial) | | cores and relict kyanite in quartzite below the staurolite-in isograd are evidence for pre-Barrovian subduction...low-T end of the Barrovian domain; above the staurolite isograd, all evidence for subduction metamorphism...and sodic amphibole, and a focused beam for garnet, staurolite and chloritoid. The ZAF correction routine...mineral compositions for white mica, chloritoid, staurolite, amphibole and plagioclase are presented in Tables...1–4. Additional mineral composition data (e.g. garnet, biotite and chlorite) are reported in Whitney |  | | Journal (article/letter/editorial) | | characterized as important. There are several interesting garnet occurrences. At Bowling Alley Point near Nundle...District in Western Australia This is one of the best garnet districts in Australia and is active today. It...bearing tantalite, manganotantalite, cassiterite and garnet. These greenstones are 1260 million years old....according to recent press dispatches from Perth. The garnet localities are at or hear Abydos, Mount Francisco...certainly an important district. Figure 1 Some Garnet Localities of Australia and Tasmania I.—Broken |  | | Book (edition) | | "Greek cross" and "St. Andrew's cross" crystals of staurolite are twinned by interpenetration, as are the "cross"...mineral class: Almandine, Silicates (nesosilicates, garnet group). A specific problem is posed by the silicates...kyanite, andalusite, sillimanite, amphiboles, staurolite, vesuvianite, scapolite), carbonates (magnesite)...objects or replacing fibers of wooden supports. Occurrence up to 3 cm (1 .1 The 8 finest crystals of...calcite or e Occurrence The finest dendritic and wirelike crystals come from Kongsberg (Norway). Other famous |  | | Book | | 9 7 7 ) m u s t complicate, which proceed from Norway and form the whole however, the simplest ideas...recent years have made it clear that the foreland in Norway largely consists of rocks last deformed, metamorphosed...continental plates (after Gale & Roberts 1974, fig. 4e). NORWAY wi SWEDEN TRONDHEIM- I MULL- FJORDEN FJALLET...of Scotland. A very recent example of its use in Norway occurs in Tull (1977), who is concerned with the...fault-bounded basin deposits of the west coast of Norway (Steel 1976) which lie still further to the west |  | | Journal (article/letter/editorial) | | Creek leads to the ruby placers. The rhodolite garnet area will be seen on the map at the south of Mason...crystals is a considerable percentage of rhodolite garnet fragments, usually clear and of j>ood color, but...Gravels to Burmah Field Cited by Authorities The occurrence of the Cowee rubybearing gravels is said to be...cavities created by the rotting out of rhodolite garnet inclusions. These tiny cavities have been definitely...clearly the typical garnet inclusions, and they correspond identically with rhodolite garnet inclusions that |  | | Book | | System of mineral classification 8 Origin and occurrence of minerals 8 Associated minerals 11 Properties...Lastly, data on the genesis, associated minerals, occurrence and application are included. The tabulated section...the minerals in this book as well. Origin and occurrence of minerals In order to gain some knowledge of...emerald, sapphire, topaz, aquamarine, apatite or garnet may be found. In the early post-magmatic process...platinum , cassiterite, w olframite, magnetite or garnet, become concentrat ed. Furthermore, they may be |  | | Book | | such as quartz and feldspar, are widespread in occurrence. Others, such as platinum and diamond, are limited...is an important aid to understanding mineral occurrence. Examples of such groupings are copper, lead...remain the same (Figure 2-8). Crystals such as garnet (Figure 2-9) or magnetite (Figure 2-10) exhibit... ■ Fig. 2-9. A comparison of two dodecahedral garnet crystals. The corresponding angles are the same...equilateral triangular faces). 6. C X 0.64 GARNET Mn82 X D 0.53 With surface alteration of chlorite |  | | Book (edition) | | Spectral XXli xxiii XXV Inclusions Luminescence Occurrence Stone Sizes Comments GEM XXV XXV XXV XXV ...certain colors of garnet are currently selling at prices over $1,000 per carat. Garnet has always been...large body of basalt that formed as a thick lava occurrence Chromium, however, is not of emerald, i...deposits); demands of the market. A gemstone occurrence is a very rare and transient geologic feature...They are not abundant, and are restricted in occurrence only to those localities where conditions were |  | | Book | | adamantine. Hardness: 1-15. Streak: shell-like. GARNET Color: Luster: reddish brown. nonmetallic, glassy...in three directions, Fracture: shell-like. STAUROLITE Color: grayish brown; brown. Luster: nonmetallic...colorless. Cleavage: one fair, one poor. Fracture: GARNET Color: Luster: 6.5—7; can be shell-like, brittle...shell-like; brittle. Hardness: 7-8. Streak: white. GARNET Fracture: Luster: nonmetallic. Hardness: 6... ZA aX Description of Minerals Actinolite Occurrence: Occurs generally in crystalline schists and |  | | Report (issue) | | français. Cover illustration Pendant: almandine garnet cabochon set in silver. Cut and set by Jim Robertson...Ontario. The cabochon measures 12 mm by 10 mm. The garnet is from River Valley, Ontario. Photograph by R...Geological Survey of Canada. GSC 2005-244 Almandine garnet crystal from Laniel, Quebec. Collected by Philip...barite occurrence Pakenham quarry Cedar Hill soapstone occurrence Galetta celestine occurrence Kingdon...Kingdon (Fitzroy, Galetta) mine Stanton lead occurrence Bell’s mine Calabogie area Bluff Point mine Calabogie |  | | Book (edition) | | Benitoite 20 Eudialyte, Tourmaline, Beryl, Dioptase, Garnet (Spessartite), Epidote 21 Uraninite, Brucite, Manganite...(-Chondrodite), Phenakite, Willemite, Garnet (Pyrope), Garnet (Almandine) 293 39 Idocrase (Vesuvianite)...40 Axinite, Andalusite, Sillimanite, Kyanite, Staurolite, 301 Sphene (Titanite) 41 Rhyolite, Obsidian...County, AND SULPHIDES 2. Silver (Kongsberg, Norway) p. 83 4. Sulphur (Agrigento, Sicily) p. 86...granite as a rule, though its texture and its occurrence are similar. Like granite, diorite is a group |  | | Book (edition) | | Tectosilicates 397 405 423 446 356 Contents 6. OCCURRENCE AND ASSOCIATION OF MINERALS Rocks and Rock-forming...in a garden has seen minerals in their natural occurrence. The rocks of the mountain, the sand on the beach...to 2 Introduction I materials of natural occurrence. Thus, cement, plaster, and glass are not steel...and in combination are common it on the mineral garnet. 6. Trisoctahedron or Trigonal Tristoctahedron...as the only form on a few minerals. The other Occurrence of Isometric Forms of the Hexoctahedral Class |  | | Book (edition) | | minerals have been added and the localities of occurrence have been updated and expanded. The special uranium...seldom present, with a resultant paucity of occurrence) tend to be in smaller crystals. Common minerals...granite as a rule, though its texture and its occurrence are similar. Like granite, diorite is a group...certain typical high-pressure minerals, like garnet, staurolite, andalusite, or kyanite, grow in the mica...the growth of different silicate minerals, like garnet and epidote. Ore minerals — metal sulfides — frequently |  | Li, Jin-Xiang, Fan, Wei-Ming, Zhang, Li-Yun, Ding, Lin, Yue, Ya-Hui, Xie, Jing, Cai, Fu-Long, Sein, Kyaing (2020) B-rich melt immiscibility in Late Cretaceous Nattaung granite, Myanmar: Implication by composition and B isotope in tourmaline. Lithos, 356. 105380 doi:10.1016/j.lithos.2020.105380 | Journal (article/letter/editorial) | | compositions with tourmaline-bearing pegmatite but garnet occurrence (Figs. 2d, 2e, 3d). Most of the GT-type tourmalines...evolved mineral assemblage from muscovite-bearing to garnet-bearing (Fig. 2e; Liu et al., 2014). NT-type tourmaline...granitic magma evolution al Based on tourmaline occurrence, geochemistry, and B isotopic composition, a...Sr contents in GT-type Pr tourmaline and garnet occurrence are in agreement with the latest-stage evolution...indicator mineral: an Jo u example from the staurolite- grade metapelites of NW Maine. American Mineralogist |  | | Book (edition) | | crystal (top right) in eclogite, which also contains garnet (red) and pyroxene (black) One other kind of volcanic...emerald-green mica (Figure 1.17). Of widespread occurrence in many metamorphic rock sequences is amphibolite...than the others, and, for example, some almandine garnet crystals may grow to several centimetres in 20...large crystals are porphyroblasts, Figure 1.19 Garnet resembling texturally but quite different in origin...intrusion may contain calcic minerals such as grossular garnet and diopside. The cooler zone further away from |  | | Book | | 7 Temperature Distribution in the Crust 8 The Occurrence of Magma in the Crust 8 ix x Contents TWO...necessarily applicable at other points. 0 THE OCCURRENCE OF MAGMA * IN THE CRUST 'rhe relevant data are... /'- .' a common form e.g. Heretoss Granite, Norway (Smithson, 1963) ______ - -- ~ xX YY XS...monzonite, basalt etc. A statement on the mode of occurrence of the less common varieties is now in order...composition. Alkali rocks can be divided by their occurrence into two groups, those that are associated with |  | | Journal (issue) | | PART 2. By John N. Train« .... 124 AN EPSOMITE OCCURRENCE IN THE TINTIC DISTRICT, UT AH. By Fred F. Mei....................................... 132 THE OCCURRENCE AND ASSOCIATION OF MILLERITE AND FLUORITE IN...minerals have also been observed in this mine: garnet, fluorite, beryl , apa• tite, molybdenite, magnetite...chlorite and calcite. rocks, a usual manner of occurrence in this area. The pegmatite mass of the Ytterby...the area includes the most northerly portions of Norway, Sweden, Finland, and the Kola peninsula in Russia |  | | Book (edition) | | seldom present, with a consequent infrequency of occurrence) tend to form smaller crystals. Common minerals...recognized high-pressure minerals, such as garnet, staurolite, andalusite, and kyanite, which can grow...rock, with different silicate minerals, such as garnet and epidote, replacing the original assortment...contactmetamorphic zones. Typically they may host garnet, epidote, vesuvianite pyrite, sphalerite, and scheelite...grew. Collecting localities of such convianite, garnet, scapolite, spinel, tact metamorphosed bombs are |  | | Report (issue) | | Denbigh Lily Robertson occurrence Cancrinite Hill occurrence Davis Hill occurrence Princess sodalite mine...River tactite zone occurrence Morrison quarry Davis quarry York River corundum occurrence Childs Mine Rankin...Maynooth Eagles Nest occurrence Baptiste Lake South occurrences McFall Lake diopside occurrence Warwickite occurrence...Thompson Mine Hickey Mine Selby Hill sunstone occurrence National Graphite Mine McKenzie Lake Mine Bancroft...Mine Woodcox occurrence Padwell Mine Eagle Lake quarry Crystal Lake fluoborite occurrence Crystal Lake |  | | Book (volume) | | Maine; round brilliant red-orange spessartine garnet (16.62 ct), Ramona, California; deep red cushion...Lake County, OR... 153 Figure 32. Map of star garnet sites, Emerald Creek, Benewah County, ID ........crystal 6. Montana sapphire suite 7. Spessartine garnet necklace 8. Precious opal 9. Black pearls ...Corporation collection. Van Pelt photo. 7. Spessartine garnet necklace set with faceted gems cut from rough mined...in ether HOLLICK, C. A. (1905) The origin and occurrence of than the Prussian amber. “The finer grade |  | | Report (issue) | | sedimentary rocks. . . . . . . . . . . . . . . . 124 Occurrence of the iron-bearing rocks and iron are. . . ...iron-bearing rocks and are. . . . . . . . . . . . 124 Occurrence and character of ore..................... 129...district have been examined, and in addition the occurrence and structure of the rocks as shown in the underground..."-\itkin County, and the slate, phyllite, and mica, staurolite and chlorite schist outcrops occurring along...are usually thin and are very local in their occurrence. A t several localities,. however, beds as thick |  | | Report (issue) | | Mine Wahnapitei occurrences MacDonald occurrence Page occurrence Warren quarry Occurrences along Highway...occcurrence St. Leonard Lake occmTence Bass Lake occurrence McMillan Mine Wallace Mine Sheguiandah quarry...River Mine Havilland Beach occurrence Tribag Mine Mammoth-Vulcan occurrence Road-cuts, km 77 to km 98...(Roussainville) occurrence Copper Creek Mine Indian Diggings, Mineral Point occurrence Mamainse shoreline...shoreline occurrence Mamainse Mine "Daisy stone" occurrence Pointe aux Mines Mine Theano Point uranium occurrence |
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