 | | 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...which Clifford Frondel collected in 1963. This âârubelliteââ sample consists of several subparallel idiomorphic |  | | Journal (article/letter/editorial) | | Lacroix (1922) for manandonite from Antandrokomby, Madagascar. The same kind of twinning was observed by the...Hebron, Maine, and of manandonite from Sahatany Valley, Madagascar. These two specimens were kindly made...the mineral represents no alteration product of rubellite or other Li-mincrals, the specimen studied did...represents a secondary alteration product of elbaite (rubellite). In most cookeite descriptions published in literature...absorption spectrum of manandonite recorded of the Sahatany Valley mineral shows, however, no noticeable difference |  | | 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 |  | | Catalog/List | | SignatureÂŽ Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street ⢠Dallas, TX 75207 (HERITAGELive...Topaz Klein Spitzkopje, Spitzkopje Area, Karibib District, Erongo Region, Namibia Klein Spitzkopje in Afrikaans...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... 57009 Cerussite Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia Kombat Cerussites |  | | Report (issue) | | of a liddicoatite crystal from Anjanabonoina, Madagascar. Photo by Bild & Text Mager Dedicated to Dr...be seen along the surface of the stone. This rubellite was broken perpendicular to the c-axis, and only...reference to what most certainly would be known as rubellite today. Hill's was the first known use of the modern...tourmaline (all colors other than black and blue). Rubellite was consid ered a sub-species of tourmaline....that two popular color varieties came into use: rubellite (1794) and Upper: "lndicolite" from Goshen, Massachusetts |  | | Journal (article/letter/editorial) | | exotic Manjaka rubellite-kunzite-rhodizite pegmatite in the Sahatany Valley of Madagascar. The K-feldspar...amount of the mineral was noted in the examined rubellite-rich veinlets. However, the content of albite...end-member, is confined to the petalite- and rubellite-rich veins, whereas montebrasite is less widespread...indicated. Numbers correspond with analyses in Table II. Scale bar 60 #m. 446 O. V O N Table I. KNORRING...enrichment in Ta from core to margin (Tables I and II). In the manganoeolumbites the overall Nb205 content |  | | 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 |  | | 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;...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...collected fluorescent minerals in the Karnes Uranium district near my ancestral home in south Texas. Over time |  | | Journal (article/letter/editorial) | | masses in this pegmatite, mostly metasomatic after rubellite-bearing fine-grained lepidolite nests (Fig. 1)...were found in the Wovelength microns 7 9 I I il II I I 15 13 I I I ]80$ ~60 ta Z < I-1.- 4o~...IR-records of their beryllian cookeite and a Madagascar manandonite. This is rather surprisirJg since...that of the Sahama's Muiane cookeite (and Sahatany Valley manandonite), with the only exception in the |  | | 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) | | 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...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...were Nigeria, Mozambique (figure 3), Zambia, and Madagascar. In particular, the availability from Zambia |  | | Journal (article/letter/editorial) | | Rhodizite was first found as minute crystals on rubellite tourmaline in the lithia-rich pegmatites around...Society cm on edge at several localities in Madagascar, including Antandrokomby near Mt Bity and at...at Manjaka and Ampakita in the Sahatany valley (Lacroix, 1922). Early attempts at chemical analysis of...Many crystalline specimens were obtained from Madagascar in the early 1960s and using material from this...from Ambatofinandrahana, in the Ankarata Mts, Madagascar (20 ~ 33' S., 46 ~ 49' E.), were obtained from |  | | Journal (issue) | | pegmatite, Madagascar ..................................191 by W. E. Wilson The Port Radium district, Northwest...into use as ground support devices after World War II. These bolts are inserted into overhead drill holes...road crosses a small creek, then climbs into the valley toward the house of Jose Moreira. About 700 meters...granitic pegmatite, mined sporadically since World War II. It measures about 20 meters thick, strikes east-west...pegmatite is located in the Jequitinhonha river valley near the town of Ara^uai. It is an albitized heterogeneous |  | | Journal (issue) | | gressman@minrec.org Articles The Malkhan Pegmatite District Krasny Chikoy, Transbaikalia, Eastern Siberian...the Forgotten Pocket, Sosedka pegmatite, Malkhan district. The same specimen as shown from a different angle...Sainte-Marie-aux-Mines June 27-30, 2019 TEN3 (Theater) Rubellite, 25.5 cm Malkhan pegmatite field, Russia Rudolf...cell.: +43 (0)664 4047940 The Malkhan Pegmatite District Krasny Chikoy, Transbaikalia, Eastern Siberian...discoveries in Brazil, California and the Himalayas. The district has produced over 50 different mineral species |  | | 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) | | "Ambrasian Collection." of Archduke of Tyrol, Ferdinand II (l529-l595), parts of it were transferred lo Vienna...JIâ˘â˘Âˇ---ďż˝ --- --- -- --- A,,.p..1 a.__ ./&l:.,.II/lal J �� - intention of acquiring new species...ďż˝--ďż˝-ďż˝'-'- Nephrite bowl, 13 cm high. Baikal Lake district. Inv. No. A.y.952, from the estate of Earl Moritz...Inv. No. L2199, L2200, belonging to Tsar Nikolay II before. Photo: A. Schumacher discoveries at the...to the Austrian state. The outbreak of \Âź>rld War II brought a slowdown in scientific activities and in |  | | Journal (issue) | | | Update on Rhodizite-Londonite from Manjaka, Madagascar | Sphalerite from Balmat, New York, USA | Tourmaline...https://gem-a.com/component/ edocman/media-kit. ii Cert no. TT-COC-002454 Š 2023 Gem-A (The Gemmological...India and by Danet et al. (2012) in samples from Madagascar. Both authors described arrays of flat inclusionsâ...Inclusions in aquamarine from Ambatofotsikely, Madagascar. Gems & Gemology, 48(3), 205â208, https://doi...Manjaka, Madagascar Since 2016, the renewal and approval of all mining licences in Madagascar have been |  | | Book | | 158 Thulite 190 Rubicelle 156 Olivine 187 Rubellite Nephrite Thetis Hair Stone 187 Rock Crystal...Garland, J. Amster of the Compagnie GĂŠnĂŠrale de Madagascar, J. Sirakian of the Taillerie de Royat, and S...exceptional size. These are found in Brazil, Madagascar, California, stan, and Kashmir, for example....local Thal and Cambodian place there, The Po valley in Italy (Milan, maintains its traditional activity...Physical Properties of Gems A tourmaline slab from Madagascar. 20 by 20 cm. G. Becker collection, Idar-Oberstein |  | | Journal (issue) | | Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico Pezzotta, William...Process ratified ⢠Alexandrite from Mananjary, Madagascar ⢠Colorchange apatite from Kazakhstan ⢠New emerald...68); and Steve Ulatowski of New Era Gems, Grass Valley, California, for the before-and-after sample of... RHODIZITE-LONDONITE FROM THE ANTSONGOMBATO PEGMATITE, CENTRAL MADAGASCAR By Brendan M. Laurs, Federico Pezzotta, William...londonite is the Antsongombato pegmatite in central Madagascar, from which at least 300 carats of rhodizitelondonite |  | | Book | | 65-136 65-128 1-96 GOLD-II] 1-112 MMEEâ˘] 25 I 1994 1-80 ARIZONA-I] ARIZONA-II] [ 129-200 201-272...177-256 185-280 169-248 [ 425-528 337--400 COLORADO-II] 321--400 337--400 ARIZONA-Ill] 337--400 257-336...Samuel G. Gordon] (by A. Montgomery) (D 4:256-261, (II) 5:3439. (III) 5:59-66, (IV) 5:115-127. (V) 5:160166...Al 'JAJ\ABO~OINA The Anjanabonoina pegmatite. Madagascar (by W. E. Wilson) 20:191-200 A.'\ :E.!\1ARTINL...The state of the art: X-ray crystallography-Part II: single crystal methods 2: 111-122 --and R. Bideaux |  | | Journal (issue) | | FineMineral.com APATITE Nagar, Hunza Valley, Gilgit District, Northern Areas, Pakistan, 11.5cm. Fine...Thomas P. Moore3 Wendell E. Wilson4 The NâChwaning I, II and III mines in the Kalahari Manganese Field have...from the NâChwaning I mine, christened NâChwaning II, began producing ore and specimens, and the roster...to the occurrences of the NâChwaning I, NâChwaning II and NâChwaning III mines, the better to help collectors...specifically to I, II or III but say simply âNâChwaning mineâ; or, worse, they give attributions to I, II or III |  | | Book | | and daring pioneer expedition to the great Rift Valley of East Africa in 1892-3. The expedition which...mapping in the Highlands and part in the Midland Valley. In the Western Highlands he and Richey established...paper on the tectonic evolution of the Midland Valley of Scotland contained ideas that had been germinating...and structure of the Moine Schists in the Morar district, western Inverness-shire. Abstract. Proc. geol...Surv. G.B., 34. Commercial mica in Scotland. Pt. II: Preliminary description of some occurrences north |
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Sahatany Valley, Ibity, Antsirabe II District, Vakinankaratra, Madagascar