| | Journal (article/letter/editorial) | June 29, 2016 REV. R. BARON ON THE GEOLOGY OF :MADAGASCAR. 305 18. N o ~ s on the GrozooY 0fM*DXGASCAR...] [PLATESXIII. & XIV.] GE~-ERAL DESCRIPTION. MADAGASCAR is as yet almost a terra incognita to the geologist...of this great island. The central portion of Madagascar is generally regarded as consisting chiefly of...by far the greater part of the eastern half of Madagascar consists of gneiss and other crystalline rocks...of the island ~. Hence the roads from Central Madagascar to the east run over an endless series of more | | | Catalog/List | pure greenish-yellow mass, no matrix Lake Alaotra, Madagascar lxl £5 Ix2£12. pure pale green crystal...Waldsassen, Oberpfalz,Germany. Maize, Antsirabe, Madagascar ½ x½£3 Ix½ £5 St Hilaire,Quebec,Canada Tel...KT! I 2NL Boron, Kem County,Califomia U.S.A Madagascar Ix! £2 lxl £7. S0 lxl £3.50 lx2 £4 ½x½ £4...lx2 £8 Mt Yukspor,Khibiny Massif,Kola,Russia Madagascar ½£4 I x½ £6 lx2 £1.50 2x2 £3 St Louis Claim...Pakistan £12 lxl £4 2x3 £7 2x2 £15 Antsirabe Madagascar ( I have 2.5 x I £8 also seen these sold as Edenile) | | | Book | 8 Front cover: A Spessartite garnet in mica, Madagascar (Sorbonne collection) 0.08 inch. B Tourmaline...rhodochrosite. 10 Amazonstone and smoky quartz, Lake George, Park Co., Colorado (Coil family- Richard...of those rocks. Spine! is frequently found in Madagascar, Ceylon, Australia and Burma. A Spine/, Burma...as disthene. A Garnet, spessartite in mica, Madagascar (0.2 inch) B Garnet, grossularite asbestos, Quebec... Besides Afghanistan, other deposits exist near Lake Baikal in the Asian part of the USSR, and in Chile | | | Catalog/List | Laumontite from Mull, Tremolite crystals from Madagascar Moldavite.New stock of Chaoite.Talc from Egypt...FLUORESCENT Large brown well formed dodecahedral Madagascar 1 ins £4 ALMANDINE 1 Crystal I inch across garnet...group____________ Attractive green with white perthitic Madagascar AMAZONITE 60 2x3inch £5 Feldspar________________...(Carbonate Fluorapatite) Brown veins and Francois Lake, British Columbia masses m Andesite .Collected personally...Canada Terminated single brownish -grey crystal "'Madagascar' good form, sizes refer to height Greenish in | | | Journal (issue) | and star garnet cat's-eyes from Ambatondrazaka, Madagascar Dr Karl Schmetzer 1 , Dr Heinz-Jürgen Bernhardt...properties of star garnets from Ambatondrazaka, Madagascar, are given. All samples examined are intermediate...garnets have been offered in local markets in Madagascar since about 1997. The rough materials for these...of Ambatondrazaka which is located south of Lake Alaotra, about 160 km north-east of the capital Antananarivo...habit of garnet crystals from Ambatondrazaka, Madagascar, showing only the dodecahedron crystal form {110}: | | | Catalog/List | -----·- -Large bro~n well formed dodecahedral Madagascar Iins£4 ALMANDINE . &.8":1C~ ~~P.. . .. ~rystal...AMAZONITE Attractive green \1\ith white pcrthitic Madagascar 2x3inch £5 . Fcl~J:ar __ _ . .. _ - · _ ~11te]...(C~bonaic Fluorapatittj Brown veins and Francois Lake. British Columbia Ix½ £1 33 APATITE . Canada . masses..._ ·-·Terminated single brownish -grey crystal Madagascar I inch £4 • • ht ___ _ _________ _ .. .. _good...CALCITE Good sharp dark grey rhombic cleavages Madagascar 2x2 £4 lx2£2 -- ··- - - - - - - - - - - - - | | | Catalog/List | SITE Benallt Mine, Llcyn Wales . . 68 APATITE Madagascar Rich brown mass with approx 5 % Cymrite .Also...!:.m £~--- -·· · ·- _ ___ AuTe+Ag 86 CALCITE Madagascar Good sharp dark grey rhombic cleavages lx2£2..._ _ _ _ _F_e_Cr_o_ __ 85 CHRYSOBERYL Lake Alaotra Madagascar Yellow- green small crystal group . !~m-...feldspar. lxl £5 lx2 £8 83 CHRYSOBERYL Lake Alaotra, Madagascar 563 CERULEITE _ Whcal Maid incline of...£6 Cu rich Adamite 579 CO BALTITE Near Elizabeth Lake, 5 miles cast of Espanola,Or 117 CUPROADAMITE Cap | | | Catalog/List | New East Wheal Russell mine, Devon ,Eng land Madagascar ½ x½ £2.50 lins£4 I x½ £4 )x i £6 Fall owfield...Arizona £2 Attractive green with white perthitic Madagascar 2x3 in ch inlergrowth. Cut and polished £5 Pu...Variety FRANCOLITE rich white cellular mass £1.20 Madagascar Terminated single brownish -grey crystal I inch... Holm bush Mine, Kelly Bray , Cornwall Francois Lake, Bri tish Columbi a Canada Holm bush Mine Cornwall...matrix Lake Alaotra, Madagascar !xi £5 lx2 £12 Yellow- green small crystal group Lake Alaotra Madagascar | | | Catalog/List | Feldspar lx2 £4 2x2 £8 1119 AXINITE 768 APATITE Madagascar Terminated single brownish -grey crystal good...__________________ Bo_s_o_14_ _ __ 33 APATITE Francois Lake, British Columbia, Canada (Carbonate Fluorapatite)...CHABAZITE . Ramsley Mine, Devon England B6 CALCITE Madagascar Good coverage of white masses with micros on...Beryl BcAIO lxl £4 lx2 £8 CHRYSOBERYL Lake Alaotra Madagascar Yellow- green small crystal group 1cm £6...£6 7mm £4 BcAIO CHRYSOBERYL Lake Alaotra, Madagascar pure greenish-yellow mass, no matrix lxl£S lx2£12 | | | Catalog/List | ✓ New East Whcal Russell mine, Devon .England Madagascar Railway cutting nearCreston . Wyoming ,U S. A...SantaCruzCounty. 1/, " 1/, £2 Arizona 2xJinch £5 Madagascar /,x½£3 60 AMAZONITE 16 AMBLYGONITE Amphibolite...✓ Gunheath Pit.St Austell.Cornwall minor Mica Madagascar T erminated single brownish -grey crystal good...good form, sizes refer to height Francois Lake, British Columbia. (CarbonateFluorapatite) Brown veins and...Langban Wcrmland Sweden Good orange short wave Madagascar Good sharp dark grey rhombic cleavages ----- | | | 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 | | | Catalog/List | ALMANDINE Large brown well fom1ed dodecahedral Madagascar I ins£4 garnet group Crystal I inch across ALSTONITE...__ County. _ AI1zona 60 AMAZO:-;ITE 2x3i nch£5 Madagascar Anractive green with white penhitic _Feldsp�ar...£4 - Tcrmina1ed single brownish -grey crystal Madagascar 1 . 5 inch APATITE £6 Ca PO/4/ F -- - -- -good...CALCITE Good sharp dark grey rhombic cleavages Madagascar 504 BUSTAJ\I ITE Mn- -Ca -SiO -- - -- - ·-76...matrix Kcmi Finland 1 29 CHRO!\IITE Fe Cr O Lake Alaotra Madagascar Yellow- green small crystal group 85 CHR | | | Journal (issue) | Idria mines (Yugoslavia), Outlaw Seriphos (Greece), Lake George Eugui quarries (Spain) $12 mine (NV), Pribram... v.20/#3 Ouro Preto (Brazil), Anjanabonoina (Madagascar), $12 Port Radium Silver (Canada) $12 v.25/#1...pegmatitic albite, quartz, lepidolite, apatite, schorl, partially resorbed blebs of brown tourmaline,...interesting specimens of feldspar, apatite, quartz and schorl, no further jeremejevite was found. Namibia is...Erongo Mountains first began producing interesting schorl crystals on microcline. Since then an increasing | | | Book | freshwater deposits of iron, known as bog iron ore and lake iron ore. Salt deposits are characteristic examples...Elongated prismatic crysffiis (cp. Fig. 19, p. 133). Madagascar. Formation and occurrence. Two types of deposit...lustrous cube-octahedrons from Leadville district, Lake Co., Colorado. MEXICO - brilliant bluish-silvery...USA - crystals ( ! !) to 5 cm. diameter in quartz, Lake Chelan, Washington. JAPAN - sharp crystals ( ! l...Sea, Imperial Co., California; also from Searles Lake, San Bernardino Co. Good specimens inexpensive but | | | Journal (issue) | Johne FGA, L Joyner PhD FGA, H Kitawaki FGA CGJ, R J Lake FGA DGA, Li Li Ping PhD FGA DGA, M A Medniuk FGA...colour change behaviour have also been found in Madagascar (M.S. Krzemnicki, pers. comm., 2004). 6 Garnet...non-basalt-related deposits in the Isalo area of Madagascar, from Ratnapura, Sri Lanka and from Mogok, Myanmar...non-basalt-related origin (e.g. from Sri Lanka, Myanmar or Madagascar) is now straightforward. However, distinction...as between Thailand and Australia, or between Madagascar, Sri Lanka and Myanmar – are much more difficult | | | Book (edition) | granite region; also from Colorado, from Baveno on Lake Maggiore, Italy, the Mourne Mountains of Ireland...almandite, apatite, beryl, oligoclase, orthoclase, schorl Uncommon: allanite, beryl, beryl (morganite)...are “dry salt lakes” or playas. The famous Searles Lake in San Bernardino is an California, County, ...dendritic masses in pitchblende deposits in Great Bear Lake district, Northwest Territories; wires, and massive...County, and mercury deposits in Sonoma, Napa, and Lake counties, California; also at Idria, Gorizia, | | | Book | Garland, J. Amster of the Compagnie Générale de Madagascar, J. Sirakian of the Taillerie de Royat, and S...Chibcha of South America offered gold and emeralds to Lake Titicaca (see EMERALD). Tribal chiefs, priests,...exceptional size. These are found in Brazil, Madagascar, California, stan, and Kashmir, for example....Physical Properties of Gems A tourmaline slab from Madagascar. 20 by 20 cm. G. Becker collection, Idar-Oberstein...amethyst Height: 2 cm. Compagnie Générale de Madagascar collection, Paris 25 Part One: Introduction | | | Journal (volume) | rose quartz comes from Minas Gerais, Brazil; Madagascar; South Africa; and Maine and other regions of...Mountains of Russia, the islands of Sri Lanka and Madagascar, and the United States. T A magnificent clump...are found in Uruguay, India, Russia, Sri Lanka, Madagascar, Siberia, Argentina, Italy and the USA. • Crystals...the following countries: Brazil, Egypt, Italy, Madagascar, Scotland, south Africa , Sri Lanka, Switzerland...Agostini Editore SpA Find out about mimetite and schorl, and learn about precious gemstones that have organic | | | Book (edition) | Czechoslovakia. Uranium ores in veins: Example: Great Bear Lake, Canada Gas cavities lined with pegmatitic material:...regions of southern California, Maine, Brazil, Madagascar Syenite Veins: quartz, gold, sulfides. Example:...pyroxenes, copper, nickel, and iron sulfides. Example: Lake Superior region Anorthosite Large coarsely crystalline...and carbonates in playa deposits. Example: Searles Lake, California. Strata and seams: anhydrite, gypsum...Antero-White Mountain, Colorado, from Baveno on Lake Maggiore, Italy, the Mourne Mountains of Ireland | | | Book (edition) | solutions, rapid and imperfect gro,vth is likely to Lake place on all cry tal faces. 1\ s noted on previous...Czechoslovakia. Uranium ores in veins: Example: Great Bear Lake, Canada Gas cavities lined with pegmatitic material:...carbonates in playa deposits. Exarnple: Searles Lake, California. Strata and seams: anhydrite, gypsum...Antero-\,Vhite l\llountain, Colorado, fro1n BaYeno on Lake i\faggiore, Italy, the Mourne Mountains of Ireland... and abroad in Brazil, l\1ozambique, Africa, Madagascar, etc. GRANITIC PEGl\lATITE ASSOCIATES Abundant: | | | Book (edition) | applied in countries such as Brazil (Figure 1.29), Madagascar and Sri Lanka, almandine garnet, aquamarine,...characteristics may come from East Africa (ruby), Madagascar 37 The Geological Sources of Gems (sapphire)...diamonds in a kimberlite pipe situated beneath Point Lake in the Lac de Gras area. The story of some of Fipke’s...diamonds; a large lamproite pipe, AK-1, was found near Lake Argyle (man-made). Possible yield from Smoke Creek...than 200 examples. They are concentrated in the Lake Victoria area: John T. Williamson discovered the | | | Journal (volume) | Location of African Localities, Rivers, Mountains, Lake*. etc., Mentioned in the Catalogue of Ethiopian...of ants occurring BOUth of the Sahara and in Madagascar and the pronounced differences between the two...M, in the subAfrica. The genus isabsenl from Madagascar, bul a ap m genus MyrmkapU {simplex) occurs...northern the Queensland bul not occurring in Madagascar. Within the Ethiopian Region the distribution... aensv stride, (JB. nkorm Forel) is found in Madagascar. Lepiogenya is beautifully represented by no | | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | Mineralogical Magazine A. LaCroix, Mineralogie de Madagascar, 1922 P. Embry and Fuller Manual of New Mineral...Bow, Madison, and Broadwater Cos., MT; Leadville, Lake Co., Breckenridge(*), Summit Co., Ground Hog mine(*)...Telluride, San Juan Co., CO; Bingham and Tintic, Salt Lake Co., UT; Mohave and Cochise Cos., AZ; Elmore, Idaho...Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake deposits, ON; Atlin and Caribou, BC; and...uraninite and nickel-cobalt minerals (Great Bear Lake, Jachymoy). Localities: Only some of the more important | | | Book | Ontario Silver and Copper lake Superior, Mich. Silverware Copper Crystal lake Superior, Mich. Copper Nugget...South Africa, and Canada. It is also found in Madagascar, Finland, West Germany, Ireland, Australia, Columbia...sulfide), is found only at the Emma Mine, near Solt lake City, Utah, where it is associated with hightemperature...Gangue Climax, Colo. Tungstenite Emma Mine, Salt lake City, Utah DYSCRASITE CRYSTAL (Idealized) Dyscrasite...Ontario Gersdoffite Aloro, Spain Cobaltite Elliot Lake, Onta rio Ullmannite Siegen, We st Germany Corynite | | | Book (volume) | many similar ones continue to word Lake Erie, appears in- Lake Erie is may formu- is limited...Tenth Street — New York (State) Lake USE 16SR (Motion USE Lake BT Dwellings 21 trisomy — New...BT — Abercromby family BT (Or.) (Or.) — — Lake Abert BT Lakes — Oregon Abert Rim Wilderness (Or...Abercrombie family (Not Subd Geog) UF Mirrors Abert, Lake (Or.) Abanaki language Abenakise language Abenaqui...Abbott family Abitibi, Lake (Ont. and Quebec) UF Lac Abitibi (Ont. and Quebec) Lake Abitibi (Ont. and Quebec) |
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Lake Alaotra, Alaotra-Mangoro, Madagascar