 | | Journal (article/letter/editorial) | | Liddicoatitic Tourmalines ANJANABONOINA DISTRICT, MADAGASCAR T he tourmaline database, like that of...description of liddicoatite from Anjanabonoina, Madagascar, as the calcium analogue of the well-known gem...does indeed exist, perhaps just not at its type Madagascar locality. So, determining that a crystal is actually...color-zoned crystals at its premier Anjanabonoina, Madagascar, type locality, a source that has produced wonderful...Alakamisy Itenina, south of Antsirabe, Fianarantsoa, Haute Matsiatra, Madagascar. The 55 Ă 50 Ă 2-mm slice |  | | Journal (article/letter/editorial) | | otherwise noted, all photos by Malcolm Southwood Madagascar 2014 The Third International Mindat.org Conference...rudimentary research before we left Australia. Madagascar, it seems, is the fourth largest island in the...the United Kingdom. Figure 2 (left). Map of Madagascar showing the places visited by the Third International...119 drifted away to the north, and initially Madagascar tried to follow with the opening of the Mozambique...Channel. However, the rift between Africa and Madagascar failed, leaving the latter as an island that |  | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |  | | Journal (article/letter/editorial) | | Mozambique belt in East Africa. Mozambique and Madagascar and within the Damara sequence in Namibia and...equatorial, central and southern Africa, including Madagascar, where the senior author has investigated numerous...Mommbique belt of East Africa, Mozambique, and Madagascar, and in the Damaran of Namibia (Figure 1). One...especially in parts of central and southern Africa and Madagascar distinct geochemical provinces of lithium can...Muianc area, Alto Ligonha, Mozambique; 10. Antsirabe area. Madagascar. Structural units from Clifford (1966) |  | Ertl, Andreas, Tillmanns, Ekkehart, Ntaflos, Theodoros, Francis, Carl, Giester, Gerald, KĂśrner, Wilfried, Hughes, John M., Lengauer, Christian, Prem, Markus (2008) Tetrahedrally coordinated boron in Al-rich tourmaline and its relationship to the pressure-temperature conditions of formation. European Journal of Mineralogy, 20 (5) 881-888 doi:10.1127/0935-1221/2008/0020-1869 | Journal (article/letter/editorial) | | tourmaline from the Sahatany Pegmatite Field at Manjaka, Sahatany Valley, Madagascar, was structurally...signiďŹcant amount of [4]B from the Sahatany Pegma- tite Field, Madagascar. The pegmatite at Manjaka (west...village Ihasy), Sahatany Valley, Betafo-AntsirabeĚ region, Antananarivo Province, Madagascar, is located...located in the Sahatany Pegmatite Field. Gem tourmaline (elbaite) has been mined in this marble-hosted, complex...microthermometric study of ďŹuid inclusions in quartz, topaz and spodumene by Ranorosoa (1986), indicates hydrothermal |  | NovĂĄk, Milan, CempĂrek, Jan, Gadas, Petr, Ĺ koda, Radek, VaĹĄinovĂĄ GaliovĂĄ, Michaela, Pezzotta, Federico, Groat, Lee A. (2015) Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. The Canadian Mineralogist, 53 (2) 357-374 doi:10.3749/canmin.1400092 | Journal (article/letter/editorial) | | SPODUMENE FROM THE MANJAKA PEGMATITE, SAHATANY VALLEY, MADAGASCAR MILAN NOVĂK§ Department of Geological...elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. The pegmatite mineral assemblage is...solidus/early subsolidus, granitic pegmatite, Manjaka, Madagascar. INTRODUCTION Boralsilite, Al16B6Si2O37, a rare...spodumene from the Manjaka pegmatite, Sahatany Valley, Madagascar, represents a novel genetic type which...SETTING The Manjaka pegmatite occurs in the Sahatany Valley pegmatite field, located in the north-east |  | | Journal (article/letter/editorial) | | (at Tamponilapa and Tsarafara-Nord, Sahatany Valley, Madagascar) and paragneisses (at CtidruĹžice, Moldanubian...NovĂĄk Tamponilapa and Tsarafara-Nord, Sahatany Valley, Madagascar and CtidruĹžice, Moldanubian Zone, Czech...Pegmatite fields of Central Madagascar The pegmatites of the Sahatany Valley pegmatite field are located...north-eastern part of the Itremo Region, Central Madagascar built by low- to medium-grade metamorphic rocks...dominance of elbaite-subtype pegmatites in this district (see Ranorosoa 1986; NovĂĄk et al. 2015a). Mineral |  | CempĂrek, Jan, Grew, Edward S., Kampf, Anthony R., Ma, Chi, NovĂĄk, Milan, Gadas, Petr, Ĺ koda, Radek, VaĹĄinovĂĄ-GaliovĂĄ, Michaela, Pezzotta, Federico, Groat, Lee A., Krivovichev, Sergey V. (2016) VrĂĄnaite, ideally Al16B4Si4O38, a new mineral related to boralsilite, Al16B6Si2O37, from the Manjaka pegmatite, Sahatany Valley, Madagascar. American Mineralogist, 101 (9) 2108-2117 doi:10.2138/am-2016-5686 | Journal (article/letter/editorial) | | Al16B6Si2O37, from the Manjaka pegmatite, Sahatany Valley, Madagascar Jan CempĂrek1, Edward S. Grew2,*, Anthony...elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. Boralsilite also occurs in this association...diffusion rates. Keywords: VrĂĄnaite, boralsilite, Madagascar, pegmatite, new mineral, structural complexity...boralsilite in the Manjaka pegmatite, Sahatany Valley, Madagascar. Crystallographic study showed that the...diffraction data were recorded using a Rigaku R-Axis Rapid II curved imaging plate microdiffractometer with monochromatized |  | | Show/Event (guide) | | or call 860-748-1661 for private appointments Topaz, Cleavelandite Mokrush Mine, Russia Thomas Spann...Tucson, AZ 85705 in the center of the Mineral District. The mineralogy section of the mim today hosts...Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania. 14.5 x 5.5 x 3.5 cm... Väyrynenite. Lolu Dahku mine, Roundu Valley, Skardu District, Gilgit-Baltistan, Pakistan. 14.5 x 3 x... Stibiotantalite. Urandu mine, Shigar Valley, Shigar District, Gilgit-Baltistan (Northern Areas), Pakistan |  | | Journal (issue) | | from the La Marina mine, Colombia. Top right: Topaz, 8.4 cm, from Ouro Preto, Minas Gerais, Brazil....54, JanuaryâFebruary, 2023 Figure 8. Topaz (âImperial topazâ) in matrix, 8.4 cm, from the VermelhĂŁo...illustrate the specimenâs dimensionality. âImperial topazâ, 8.4 cm, from the VermelhĂŁo mine, Saramenha, Minas...31. Elbaite, 9.2 cm, from the Barra do Salinas District, Coronel Murta, Minas Gerais, Brazil. Will Johnson...scepter crystal, 7.5 cm, from the Barra do Salinas District, Coronel Murta, Minas Gerais, Brazil. Will Johnson |  | | Journal (issue) | | from the GachalĂĄ mine, GuaviĂł-GuatĂŠque mining district, BoyacĂĄ Department, Colombia. Gail & Jim Spann...cm, from Stak Nala, Haramosh Mountains, Skardu district, Gilgit-Baltistan, Pakistan. Zach Goodman collection;... China. Wally Mann collection; Joe Budd photo. Topaz, 2.6 cm, from Katlang, Mardan Dist., Khyber Pakhtunkhwa...ârockhoundingâ that developed immediately following World War II. Mineralogical societies in Texas were first organized...Texas collections. Mineral Collections in Texas-II (2014) The second Mineral Collections in Texas supplement |  | | Journal (issue) | | Kenya, Zimbabwe, Nigeria, and Namibia, as well as Madagascar), South America (Brazil and Colombia), central...Myanmar (Burma); blue and pink sapphires from Madagascar; a wide variety of colored stones from southern...nephrite], opal, peridot, quartz, spinel, tanzanite, topaz, and tourmaline). Locality information is both summarized...small stones (0.05 to 1 ct) of high quality. Madagascar and Zambia tend to produce cleaner but slightly...Deposits in Afghanistan (Panjshir Valley) and Pakistan (Swat Valley) produced fine-quality emeralds of |  | | Report (issue) | | come from two or three different diggings in Madagascar, including the well-known Anjanabonoina pegmatite...6 cm, from Tsarafara Sud, Sahatany Valley, Antananarivo Province, Madagascar. Mineral Classics specimen...Anjanabonoina pegmatite, Betafo district, Antananarivo Province, Madagascar. Mineral Classics specimen and...pale aquamarine is rare from the pegmatites of Madagascar: ďĽ=========================================...Beryl, 5.2 cm, from Estatoby, Sahatany Valley, Antananarivo Province, Madagascar. Mineral Classics specimen |  | | Catalog/List | | SignatureÂŽ Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street ⢠Dallas, TX 75207 (HERITAGELive...Estimate: $400-$600 57002 Topaz Klein Spitzkopje, Spitzkopje Area, Karibib District, Erongo Region, Namibia...because it is the source for very fine and colorless Topaz crystals of high transparency. This one is of above...57007 Jeremejevite Ameib Farm 60, Usakos, Karibib District, Erongo Region, Namibia Jeremejevite crystals...Cuprite Onganja Mine, Onganja, Seeis, Windhoek District, Khomas Region, Namibia One of the iconic Cuprite |  | | Catalog/List | | 10:00 AM â 5:00 PM CT Heritage Auctions Design District Annex 1518 Slocum Street ⢠Dallas, TX 75207 Session...5:00 PM ET LOT VIEWING Heritage Auctions Design District Annex 1518 Slocum Street ⢠Dallas, TX 75207 Thursday...grow. 73001 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) Looking almost like...com/6150 73002 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) For those that have...750 73003 TOURMALINE Momeik Township, Kyaukme District, Shan State, Myanmar (Burma) As if Momeik doesnât |  | Zagorsky, Victor Y., Peretyazhko, Igor S., Sapozhnikov, Anatoliy N., Zhukhlistov, Anatoliy P., Zvyagin, Boris B. (2003) Borocookeite, a new member of the chlorite group from the Malkhan gem tourmaline deposit, Central Transbaikalia, Russia. American Mineralogist, 88 (5) 830-836 doi:10.2138/am-2003-5-611 | Journal (article/letter/editorial) | | veins, Malkhan gem tourmaline deposit, Chikoy district, Chita oblast, Russia. Borocookeite proper, as...belonging to the chlorite group) in pegmatites in Madagascar (Lacroix 1912, 1922). Boron-containing cookeites...gem tourmaline-bearing pegmatite bodies in the district. However, true borocookeite occurs only in the...(OH)8; (OH)exp = 8,87; manandonite, Sahatany valley, Madagascar (Ranorosoa et al. 1989). 7 = (K0.92Na0...paragenesis of the Little Tree mine pegmatites, Ramona district, San Diego County, California. Mineralogical Record |  | | Journal (article/letter/editorial) | | accessory minerals are represented by apatite, topaz, cassiterite, beryl zircon, columbite-tantalite...Ctidru~ice, Biskupice, Vlast~jovice, Kom/trovice, Jeclov II). However, isolated occurrences also are present...i Ctidru~ice; Bis Biskupice; J e I I J e c l o v II; V i a Vlast~jovice. A a b u n d a n t , C c o m...occurrence of lepidolite and particularly muscovite, (ii) predominance of K-feldspar over albite, (iii) absence...amblygonite-montebrasite, spodumene and cookeite, (iv) absence of topaz, (v) presence of boron-rich minerals other than |  | | Report (issue) | | of a liddicoatite crystal from Anjanabonoina, Madagascar. Photo by Bild & Text Mager Dedicated to Dr...fact, Malagasy tourmaline was used during World War II in pressure gauges for submarines (personal communication...Bronze-brown; streak: yellow-brown; luster: vit district Corinthia in Austria and Slovenia, dravite is...natural radiation. Yellow elbaite from Tsilaisina, Madagascar contains up to 8.9 weight percent MnO (Dirlam...Brazil; Sahatany Valley pegmatite district in Madagascar; Nigeria; Namibia; Nuristan Valley, Afghanistan |  | | Journal (article/letter/editorial) | | given admirable accounts of the Meldon axinite, topaz, Li-A1 micas and lithian tourmaline. Chaudhry (1971)...varying amounts with accessory elbaite tourmaline, topaz, apatite, fluorite, and occasionally petalite. There...types and may also contain additional elbaite, topaz, fluorite, and apatite. The pegmatite veins. In...which the normal minerals with the exception of topaz are repeated in larger form, some feldspars measuring...the minerals are orthoclase, Li A1 mica, quartz, topaz, and petalite. The most common veins, especially |  | | Journal (issue) | | Liddicoatite Tourmaline from Anjanabonoina, Madagascar Dona M. Dirlam, Brendan M. Laurs, Federico Pezzotta...elbaite with Cu ⢠Vesuvianite from Kenya and Madagascar ⢠Star opal triplets ⢠Plus: Emeralds from Hiddenite...Hiddenite, North Carolina ⢠Star emerald from Madagascar ⢠Tourmaline âsliderâ in quartz 107 109 111...them (âA special tributeâŚ,â 1997). During World War II, from August 1942 until 1940 1941 June 28, 1940...they decided to go to the heart of the diamond district in New York. Liddicoat and Crowningshield taught |  | | Journal (issue) | | from left: Liddicoatite, 7 cm, from the Sahatany Valley, Madagascar. Collected by Federico Pezzotta; Antonio...Ben DeCamp photo. Iolite, 4 cm, from the Entia Valley, Australia. Collected by George Stacy; Jeff Scovil...in 1868, a crystal cavity was discovered in the valley of the Tiefen Glacier that gave entirely new meaning...party of mountaineers was working its way up the valley of the Tiefengletscher (Tiefen Glacier), in the...the Canton Uri. On the northern side of the valley rose a mountain known as the Gletschhorn. A Berne pharmacist |  | | Journal (issue) | | pegmatite, Madagascar ..................................191 by W. E. Wilson The Port Radium district, Northwest...Richards Famous mineral localities: the Ouro Preto topaz mines ............................................into use as ground support devices after World War II. These bolts are inserted into overhead drill holes...new species of minerals, F-OH substitutions in topaz, amphiboles and tourmaline. X-rays were required...road crosses a small creek, then climbs into the valley toward the house of Jose Moreira. About 700 meters |  | | Journal (issue) | | Antetezambato, Madagascar. (6) Calcite, Mashamba West mine, Congo Republic. (7) Sodalite, Kokcha Valley, Afghanistan...Scorodite, Tsumeb mine, Namibia. (9) Shigaite, NâChwaning II mine, South Africa. v This special supplement was...Hauerite, 2.1 cm, from Raddusa, Catania, Sicily. (7) Topaz, 2 cm, from Schneckenstein, Saxony, Germany. (8)...illustrated in Max Bauerâs Precious Stones (1904): (9) Topaz, 2 cm, from Minas Gerais, Brazil. (10) Chrysoberyl...thumbnail mineral specimensâ published in the Antelope Valley (California) Gem and Mineral Club bulletin, mentioned |  | | Journal (issue) | | Hist. Los Angeles, CA Steven R. Morehead Green Valley, AZ Donald R. Peacor University of Michigan Ann...mining at Ray commenced in 1880. After World War II, it was decided that the mine could best be worked...specimens from the Red Cloud mine in the Silver District of La Paz County, Arizona are widely regarded...Larson The Himalaya dike system in the Mesa Grande district of San Diego County, California consists of several...âkunziteâ variety of spodumene was a mine in the Pala district, and The Mineralogical Record, volume 39, MayâJune |  | | Journal (issue) | | to Pinkish Orange Malaya Garnets from Bekily, Madagascar Karl Schmetzer, Thomas Hainschwang, Lore Kiefert...Heinz-JĂźrgen Bernhardt Malaya garnets from southern Madagascar, only the second commercial source of this material...the AnahĂ mine, Bolivia ⢠âCopalâ resin from Madagascar ⢠Iolite and corundum from Wyoming ⢠Green kyanite...Tourmaline from Warner Springs, California ⢠Synthetic topaz ⢠Exhibits, announcements, and upcoming conferences...publisher. ABOUT THE COVER The Ramona pegmatite district in southern California was the worldâs leading |
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Andrianampy, Sahatany Valley, Ibity, Antsirabe II District, Vakinankaratra, Madagascar