 | | Journal (article/letter/editorial) | | Albian (Uppermost Lower Cretaceous) Sands of Miechów Synclinorium, Southern Poland Jakub Kotowski * ...of Warsaw, Żwirki i Wigury 93, 02-089 Warszawa, Poland; knejbert@uw.edu.pl (K.N.); dolszews@uw.edu.pl...tourmalines are mainly dravite with a prevalent schorl end-member with average XMg values over 0.6. Apart...provenance; Bohemian Massif; Miechów Synclinorium; Poland 1. Introduction In the history of the Earth, the...Szczecin–Miechów Synclinorium [3], is located in southern Poland (Figure 1). That area, during the Middle and Late |  | | Journal (issue) | | R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University... Menezes and J. M. Martins The Jensen quarry, Riverside County, California ............................noticed by Bill on a specimen from the San Venanzo quarry, Terni, Umbria, Italy, and was later recognized...zone 2, and the other consists of a rock with a lower P 20 5 (4.5%) and medium MgO grade (around 5%) called...height. In some recrystallized fractures in the dolomitic carbonatite of zone 2 yellowish brown radiating |  | | Journal (article/letter/editorial) | | and Cr contents of 0.32 and 0.18 a.p.f.u., in dolomitic and ankeritic marbles, respectively. Tourmaline...concentrations of Zn (av. 0.01 a.p.f.u.) and in ankeritic marble it also contains Ni (av. 0.04 a.p.f.u.). Zn-rich...138, 0.115 and 0.267 a.p.f.u., respectively, in dolomitic marbles, and 0.103, 0.078, 0.065 and 0.185 a.p...described (as solid solutions between endmembers uvite, schorl, dravite and elbaite) in the subsystem Ca-Fe-Mg-Li...PermoTriassic sequence of metapelite, quartzite and marble with local discontinuous sheets of orthogneiss |  | | Report (volume) | | Rocks in the Grenville Complex of St. Lawrence County, New York U.S. GEOLOGICAL SURVEY BULLETIN 1626-C...Rocks in the Grenville Complex of St. Lawrence County, New York By C. ERVIN BROWN and ROBERT A. AYUSO...cited C31 FIGURES 1. Index map of St. Lawrence County, N.Y. C2 2. Generalized geologic map showing sample...brecciated tourmalinite, granular patches of black schorl, and schorl prisms C6 4. Photomicrographs of granoblastic...Rocks in the Grenville Complex of St. Lawrence County, New York By C. Ervin Brown and Robert A. Ayuso |  | | Journal (article/letter/editorial) | | low proportion of micas is typical. Tourmaline (schorl to elbaite) is an omnipresent subordinate to accessory...amblygonite-montebrasite. Its lithium content is comparably lower. Consequently, its role as a lithium carrier has...and micas, subordinate to minor minerals include schorl and locally also garnet (spessartine-almandine);...rocks such as gneiss, serpentinite, dolomitic and calcitic marble, Fe-rich skarn, and pyroxene gneiss...some pegmatites penetrating serpentinite, calcitic marble and Fe-rich skarn. Reaction rims composed of anthophyllite |  | | Journal (article/letter/editorial) | | Lawrence County. Students of mineralogy recognize the international reputation of St. Lawrence County for...any edition, re veals frequent mention of the County as a place where certain minerals are found. Most...The mineral collecting sites of St. Law rence County are of three general types: 1 ) those of metamorphic...and physiographic provinces of northern New York (lower map). Upper map shows the relationship between the...diopside (Ca Mg ( S i 0 ) ) often occurs in dolomitic marble (Ca Mg ( C 0 ) ) along contacts with silicate |  | | Journal (article/letter/editorial) | | Republic, and the White Queen mine, Pala, San Diego County, California. Zoned crystals consist of pale pink...crystallization recorded in Ferich elbaite, foitite, schorl and other minerals [micas, (Nb,Ta)-oxides] appears...témoignent l’elbaïte riche en Fe, la foïtite, le schorl et les autres minéraux [micas, oxydes de (Nb,Ta)]...tourmaline (foitite – Fe-rich elbaite – Li-rich schorl – “fluorelbaite”) hosted by elbaite from the Cruzeiro...slight predominance of the foitite component over schorl (Novák & Selway 1997, Selway et al. 1999, 2000) |  | Hazarika, Pranjit, Bhuyan, Niraj, Upadhyay, Dewashish, Abhinay, Kumar, Singh, N.N. (2019) The nature and sources of ore-forming fluids in the Bhukia gold deposit, Western India: constraints from chemical and boron isotopic composition of tourmaline. Lithos, 350. 105227 doi:10.1016/j.lithos.2019.105227 | Journal (article/letter/editorial) | | Late-stage type III tourmaline (Tur-III), also of schorl composition, replaces Tur-II 18 along fractures...facies carbonate-pelitic units represented by dolomitic marble, crystalline 86 limestone, calc-silicate...(Deol et al., 2012; 87 Golani et al., 2002). The lower unit of the Aravalli succession just above the BGC-I...mineralization is structurally controlled and hosted in dolomitic marble, quartz-albite and 108 calc-silicate rocks...albitized calc-silicate rocks 120 within dolomitic marble, (2) pyrrhotite ± arsenopyrite ± pyrite bands |  | | Journal (article/letter/editorial) | | with massive sulphides (Slack 1982), whereas both schorl-rich and dravite-rich compositions are reported...chert intercalations are d o m i n a n t in the lower parts of these basins, whereas metatuffites and...parts. Sub-economic metal enrichments occur in the marble-chert sequences and range from ironmanganese oxide...5 Dammbergsgruva Pb-Zn sulphides 6 Ekebergs quarry (Glanshammar) Erntorp Distal to Pb-Zn sulphides...zones, of which one runs parallel to the Nora-Viker marble-metachert sequence from Dalkarlsberg through Bergmanshyttan |  | Ertl, Andreas, Topa, Dan, Giester, Gerald, Rossman, George R., Tillmanns, Ekkehart, Konzett, Jürgen (2019) Sr-bearing high-pressure tourmaline from the Kreuzeck Mountains, Eastern Alps, Austria. European Journal of Mineralogy, 31 (4) 791-798 doi:10.1127/ejm/2019/0031-2863 | Journal (article/letter/editorial) | | the country-rock, were influenced by a Sr-bearing marble. Key-words: high-pressure tourmaline; oxy-dravite;...Hughes (2002) on Fe-bearing olenite and on Al-rich schorl also showed substantial amounts of [4]B. “Oxy-rossmanite”...electron microprobe. Because the SiO2 content was even lower than in zone 1, we assumed 0.10 apfu [4]B to occur...in contact to mylonitic garnet micaschist and to marble, which was found at the Koralpe, Eastern Alps,...tourmaline- and spodumene-bearing pegmatite crosscuts a marble from where Ca was mobilized, which is also responsible |  | | Journal (article/letter/editorial) | | T H E CHRISTY P I T , MAGNET COVE, HOT SPRINGS COUNTY, A R K A N 4 2 SAS. H. L . Bar wood, Arkansas...occurrence of eggonite at Wilson Springs, Garland County, Arkansas, contains 12 percent F e 0 . Other minerals...as shown. Although these pyrite over Randolph County in southwestern Illinois. Specimens were growths...black altered marcasite crystals up to 1 cm in dolomitic marble. The locality of amphibole mineralization...farm. The contact between a small pegmatite and marble is exposed on the small knoll immediately west |  | | Journal (article/letter/editorial) | | calcsilicate progenitor was probably a impure dolomitic carbonate sediment. Amphibolite-hosted scheelite...with stratiform scheelite deposits comprise zoned schorl-dravite and are no different from other tourmalines...herein are throughout regionally metamorphosed Lower-Middle Proterozoic calc-silicate horizons which...grained bedded stratiform scheelite is present in marble, regional calc-silicate rocks intimately associated...emplacement. In contrast, the granites contain schorl. Arribas-Rosado (1986) argues that the original |  | | Journal (article/letter/editorial) | | to the alkali group and ranges from dravite to schorl in composition. In-situ B-isotope analyses of tourmaline...regionally metamorphosed SC R to greenschist or lower amphibolite facies with a peak temperature of ~500...albitized quartz porphyries, occur locally within the lower part of the Dahongshan Group (Fig. 2). Precise isotopic...between meta-tuffaceous rocks (mica schist) and dolomitic marble (Figs. 3C-D), consist of magnetite, chalcopyrite...not corrected for pressure and are expected to be lower than the trapping temperatures. The temperatures |  | | Catalog/List | | Mohave Ixl £9 'A x A £3 1 xA Pb SiO/3_____________ County. Arizona, U.S.A £5___ Rich orange-red masses with...are small crystals County, Arizona Pure green cleavage AMAZONITE Landsverk quarry, Evje, Norway Ixl 50p...grained mass in calcite Dark Star Mine.Ravalli County, lx!4 £2.50 Ixl £4 37 Ce Sr CO/3 Montana U.S.A...£3 7 Pure black mica plate new Analysis , Saga Quarry, Tvedalen near ANNITE Mica__________ paper available...with Chrysotile, pale grey-green Ixl £1 County Bridge Quarry,Lizard Mg Fe SiO_______ massive. _________ |  | | Report (issue) | | ^ Anne Arundel County 43 Baltimore County 45 Howard County - Montgomery County 88 Prince Georges...Georges County Virginia 74 . 120 129 Arlington County 129 Fairfax County 131 Fauquier County 139...139 Loudoun County 143 Prince William County 149 Diabase quarries of northern Virginia 155 CAPTIONS...mines in the Soldiers Delight region, Baltimore County, Maryland. Adapted from Pearre and Heyl , 19.60...barrens of the Soldiers Delight region, Baltimore County, Maryland. Figure 11. Water-filled adit of the |  | | Journal (article/letter/editorial) | | varieties, and habits of tourmaline: (a) left: schorl, 20 cm, Minas Gerais, Brazil, and right: dravite...Ledge dike, Little Three mine, Ramona, San Diego County, California. Varieties of elbaite: (c) rubellite...Tourmaline Queen mine (1972), Pala district, San Diego County, California, Jesse Fisher and Joan Kureczka specimen...California, San Diego] at 03:56 02 March 2016 Dravite Schorl Foitite Olenite Elbaite Fluor-liddicoatite Rossmanite...magmatic tourmaline that is composed mostly of schorl, foitite, and olenite components in nearly equal |  | | Journal (article/letter/editorial) | | rocks. Species X Y3 Z6 T6O18 (BO3)3 V3 W Schorl Dravite ‘‘Oxy-dravite’’* Povondraite Uvite Na...Fe3+O(Fe2+(OH))1 CaMg(NaAl)1 TiO2(R(OH)2)1 rocks. Schorl, dravite, and uvite are relatively common species...with sequences of quartzite, mica schist, and dolomitic marble, and are locally cut by carbonate breccias...Oos locality have d11B values that are distinctly lower (4.1 and 8.2 &), being consistent with a boron...connate fluids of the evaporitic sediments and (2) lower salinity aqueous fluids, possibly derived from adjacent |  | | Journal (article/letter/editorial) | | from Leib’s Moonstone mine, Bloomingdale, Essex County. This specimen (8 cm across), collected by Schuyler...from the Route 28N road cut west of Newcomb, Essex County. John A. Jaszczak specimen 1959 and photo. *Synthetic...1940s from an outcrop near Olmstedville, Essex County. Top: This 0.8-mm tabular graphite crystal shows...titanite from an outcrop near Olmstedville, Essex County, isolated from material originally collected by...ZZL_*V\U[` A railroad cut near Minerva exposes marble with blue calcite enclosing microcrystals, rosettes |  | Yu, Miao, Feng, Cheng Y., Mao, Jing W., Zhao, Yi M., Li, Da X., Zhu, Yong F. (2017) Multistage Skarn-Related Tourmaline From the Galinge Deposit, Qiman Tagh, Western China: A Fluid Evolution Perspective. The Canadian Mineralogist, 55 (1) 3-19 doi:10.3749/canmin.1600043 | Journal (article/letter/editorial) | | extension environment. Partial melting of the thickened lower crust might have contributed to their formation...which is composed of limestone, argillaceous dolomitic limestone, dolomite, chert, sandstone, and basaltic...intrusive contact between the granodiorite and the dolomitic marble, and the IV, V, and VI Ore Domains are distributed...proportion is more than 40%, and the Fe proportion is lower than 50%, which implies a moderate enrichment of...the field above the schorl–dravite line. Low-Al tourmalines fall below the schorl–dravite line. Almost |  | Hezel, D. C., Kalt, A., Marschall, H. R., Ludwig, T., Meyer, H.-P. (2011) Major-element and Li, Be compositional evolution of tourmaline in an S-type granite-pegmatite system and its country rocks: an example from Ikaria, Aegean Sea, Greece. The Canadian Mineralogist, 49 (1) 321-340 doi:10.3749/canmin.49.1.321 | Journal (article/letter/editorial) | | metapelite have more than an order of magnitude lower concentrations (Li: 2.0–5.8 mg/g, Be: 0.3–0.9 mg/g)...metamorphic fluids in the metapelites interacted with marble units where they were in close vicinity, leading...solid solutions between the Fe and Mg end-members schorl and dravite, with some degree of Ca substitution...Greek island of Ikaria. The granite intruded a lower amphibolite-facies metapelite complex. Pegmatitic...rocks in the metapelite are in close proximity to marble units. We report here the chemical evolution of |  | | Report (edition) | | “old” Lime Bluff quarry, Muncy; right fibrous : tremolite, C. K. Williams quarry, Easton: bottom: calcite...oriented coatings of goethite, “old” Lime Bluff quarry, Muncy, (courtesy of Delbert L. Oswald) ADDITIONAL...edition of Mineral Collecting Cedar Hill in quarry where Dave had done IV much of his work PREFACE...permission from the owners of the land, from the quarry or mine operators before entering to collect. (Land...particular site, remember it is possible to visit the county courthouse in which the site is located, and trace |  | | Journal (article/letter/editorial) | | Vulcan Materials quarry in Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and...zircon), particularly in the Wausau area of Marathon County (Falster 1987). Middle Proterozoic quartzites (1...Wisconsin mineralogy. The index is arranged county by county (fig. 1). Where possible, township and range...for any I may have omitted. Adams County Hamilton Mound. A quarry is located in the NE 1/4 sec. 36 T*20N*R...potassium feldspar, quartz (massive and crystals), schorl (Greenberg et al. 1986). Figure I . Map of Wisconsin |  | | Journal (article/letter/editorial) | | composition, dominated by amphibole-bearing dolomitic marble and albite-rich quartzo-feldspathic rocks...development of scapolite-bearing assemblages in dolomite marble, occurrence of tourmaline-rich mineralized rocks...assemblage (the latter being represented by dolomitic marble and crystalline limestone) and a dominant...(post-Aravalli) thermal perturbations. The older, dolomitic marble unit occurring at Jhamarkotra (20 km SE of...hosts stromatolitic rock phosphate. The younger, dolomitic succession is represented by Zawar Mines sequence |  | | Journal (issue) | | Volume 53 Number 4 I S8 The Foote Minerals Laura Marble Jack Hanahan Jr. 174 Minerals which Alternate with...0035-7529 1978 by The Foote Quarry in Kings Mountain, by LAURA MARBLE 102 Dorset Way Lyman, South Carolina...Company spodumene mine at Kings Mountain , Cleveland County, North Carolina consisted of six small prospect...worthwhile . specimens. Milarite from the Foote quarry. Photo by Lewis Perloff l 58 ROCKS AND MINERALS...used for road metal. Thin beds of marble are found in parts of the quarry and another common wall rock is |  | | Journal (issue) | | few locations world-wide, for example in the dolomitic marble of Crevola d'Ossola, Italy; Lyangara, Uzbekistan;...After receiving comments that the Goodall Farm Quarry, also known as the Sanford vesuvianite locality...Carnegie Gem & Mineral Show, amidst the elegant marble halls and galleries of the Carnegie Museum of Natural...showing small quartz crystals and massive calcite (at lower right) in shrinkage cracks. Chalcedony -> Chalcedony...V anadiun1 l\'line, l\fagnet Cove, Hot Springs County, Arkansas is Reclaimed and Collecting Ceases |
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