 | | Journal (article/letter/editorial) | | district, Paraná basaltic province, southernmost Brazil a a Viter Magalhães Pinto , Léo Afraneo Hartmann...Universidade Federal do Rio Grande do Sul , Porto Alegre, Brazil b CPRM – Geological Survey of Brazil , Porto Alegre...Alegre, Brazil Published online: 12 Feb 2010. To cite this article: Viter Magalhães Pinto , Léo Afraneo...district, Paraná basaltic province, southernmost Brazil, International Geology Review, 53:10, 1163-1179...district, Paraná basaltic province, southernmost Brazil 1938-2839 Geology Review, 0020-6814 TIGR International |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...France acquired his remarkable collection of giant quartz crystals, exhibited in the National Museum of Natural...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...CRYSTALS GIANT QUARTZ CRYSTALS UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta...Crystals GIANT QUARTZ CRYSTALS UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW |  | Pinto, Viter Magalhães, Hartmann, Léo Afraneo, Santos, João Orestes S., McNaughton, Neal Jesse, Wildner, Wilson (2011) Zircon U–Pb geochronology from the Paraná bimodal volcanic province support a brief eruptive cycle at ~135Ma. Chemical Geology, 281 (1) 93-102 doi:10.1016/j.chemgeo.2010.11.031 | Journal (article/letter/editorial) | | Vista, Roraima, Brazil Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves...Gonçalves 9500, 91500-970 Porto Alegre, Rio Grande do Sul, Brazil Centre for Exploration Targeting, University...Província, 105, 90840-030 Porto Alegre, Rio Grande do Sul, Brazil b c a r t i c l e i n f o Article history:...Ma (rhyodacite), 134.8 ± 1.4 (quartz latite) and 135.6 ± 1.8 Ma (quartz latite). The age of Paraná magmatism...al. / Chemical Geology 281 (2011) 93–102 of the Rio Piquiri lineament, Fig. 1a) is younger than the southern |  | Arena, K.R., Hartmann, L.A., Baggio, S.B. (2014) Geological controls of copper, gold and silver in the Serra Geral Group, Realeza region, Paraná, Brazil. Ore Geology Reviews, 63. 178-200 doi:10.1016/j.oregeorev.2014.05.005 | Journal (article/letter/editorial) | | the Serra Geral Group, Realeza region, Paraná, Brazil K.R. Arena, L.A. Hartmann, S.B. Baggio PII: DOI:...the Serra Geral Group, Realeza region, Paraná, Brazil, Ore Geology Reviews (2014), doi: 10.1016/j.oregeorev... Paraná, Brazil MA NU Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida...Gonçalves, 9500; 91501-970 Porto Alegre, Rio Grande do Sul, Brazil ED E-mail addresses: PT Karine da...Serra Geral Group, Realeza region, SC Paraná, Brazil MA NU Karine da Rosa Arena, Léo Afraneo Hartmann* |  | | Catalog/List | | other lots I will need to use a separate bid sheet. Do you want to receive an email, text message, or fax...cut bid). Any podium, fax, phone or mail bids that do not conform to a full or half increment will be rounded...Elbaite on Feldspar. And then there is another Rose Quartz, smaller than the “Madona Rosa”, but just as choice...specimen collecting policy on the part of Kennecott and Rio Tinto Mining Companies during the period of operation...$400-$600 53003 TOURMALINE Himalaya Mine, Mesa Grande, San Diego County, California, USA San Diego County |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...(Figure 4b), spessartine (Figure 4c), almandine, quartz, zircon, apatite, topaz, sillimanite, fluorite...tourmaline (Figure 4d), aquamarine, spessartine, quartz, topaz, zircon and phenakite are mined. Tourmaline...Saint-Clair Fonseca Junior (BC Gemas do Brasil, Governador Valadares, Brazil), and heating to 500°C in air was |  | | Catalog/List | | other lots I will need to use a separate bid sheet. Do you want to receive an email, text message, or fax...cut bid). Any podium, fax, phone or mail bids that do not conform to a full or half increment will be rounded...simple form and luster. Only upon close observation do certain details start to emerge. For example, there...this one, come from the mine with a heavy coat of Quartz, which is carefully and laboriously removed by...waxy to vitreous, and the surrounding colorless Quartz ‘matrix’ is matte in appearance. The specimen is |  | | Catalog/List | | cut bid). Any podium, fax, phone or mail bids that do not conform to a full or half increment will be rounded...include: • The Madona Rosa – the most imposing Rose Quartz specimen ever to be unearthed: a deserving competitor...competitor for the title of the world’s finest Rose Quartz. • One of the fabled Medina Aquamarines – once...mineral Chrysocolla gets mixed up or over-coated with Quartz minerals, the combination becomes harder and durable...Governador Valadares, Doce Valley, Minas Gerais, Brazil Like a geometric sculpture rising from two clouds |  | | Catalog/List | | meteorites that contains a rare form of shocked Quartz called Stishovite. The irst remnants of Muonionalusta...rusty “patina” and do evidence minor iron oxide deterioration as such specimens do require treatments...” (HED) subgroup of achondrite meteorites, which do not contain chondrules. It is theorized the origin...due to its metallic luster and patches of drusy Quartz crystals. This medium-sized sphere has been carved...com/5386 72054 Blue Calcite Sphere Stone Source: Brazil This huge orb appears almost as a group of lufy |  | | Catalog/List | | continued support of Heritage Nature & Science. We really do appreciate your time. Craig C. Kissick Director...August 18, 2018 | 11:00 AM CT 7 Minerals 72001 Quartz var. Chalcedony Mamuju, Sulawesi Barat Province...Sulawesi (Celebes) Indonesia The Chalcedony variety of Quartz has been referred to as “Grape Agate” since it...x 6.33 x 5.83 cm) Estimate: $700-$1,000 72002 Quartz var. Chalcedony Mamuju, Sulawesi Barat Province...(Celebes) Indonesia This Chalcedony, variety of Quartz, is known as “Grape Agate” for obvious reasons |  | | Catalog/List | | to the greater world of fine art appreciation. To do that we work continuously, concentrating on finding...Natural History option in the auction world, and will do the same for the category of Fine Minerals. We are...include: a huge Arizona Gold in Quartz, an enormous Japan-Law Twin Quartz, a giant Tanzanite crystal, and...(10cm) vibrant blue cubes perched on snow-white Quartz, re-defines “European classic.” Additionally, we...MINERALs 49001 FINE AMETHYST GEODE PAIR Rio Grande do Sul, Brazil This excellent sliced geode pair boasts |  | | Catalog/List | | In the early 1980s Rock began to concentrate on Brazil and Peru with occasional trips to Uruguay, Chile...RRUFF Project. Another was the 7,500+ quartz in Minas Gerais, Brazil: a micromount collection. And of course..............................................196 Brazil..................................................knows what the lust for Red Cloud Wulfenites can do? Every time the place gets ‘worked’ the story is...friends with in the old folks home. Do you feel lucky, punk? Well, do you? Overall Measurements: 1.6 x 1 |  | | Catalog/List | | of the fossil varieties are now extinct, Crinoids do still exist today. Crinoids that attached to the...been replaced by minerals, usually a silicate like Quartz. The original structure of the plant is retained...Permian, Motuca Formation Filadélfia, Tocantins, Brazil This specimen of Petrified Wood is a “best of both...Permian, Motuca Formation Filadélfia Co., Tocantins, Brazil This stout log measures 7 inches (17.8 cm) in height...fern dating back to the Permian. The ranchos in Brazil, where the formation was exposed, are now closed |  | | Catalog/List | | ‘normal’ habit, often in conjunction with euhedral Quartz crystals. The potential for new discoveries and...sideways as well as up. This form is sometimes seen in Quartz, but very rarely in Tourmaline. The rough exterior...and is accompanied by a partially euhedral Smoky Quartz crystal. The Phenakite, measuring 0.9 inches (2...Starting Bid: $2,500 73013 SPESSARTINE on SMOKY QUARTZ Wushan Spessartine Mine, Tongbei, Yunxiao Co.,...Province, China Here are two typically dark Smoky Quartz prisms of good transparency, penetrating a non-descript |
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Iraí, Rio Grande do Sul, Brazil