 | | 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 |
 | | Journal (article/letter/editorial) |
| analysis of the Betsimisaraka Suture in northeastern Madagascar Tsilavo Raharimahefa ⁎, Timothy M. Kusky Department...Available online 3 August 2008 Keywords: Tectonics Madagascar Suture Gondwana Lineaments Remote sensing EAO...t r a c t The Betsimisaraka Suture (B.S.) of Madagascar is an important structural zone defining the collision...NE–SW striking dextral shears recorded in the Lake Alaotra region. Several faults, joints and fractures...crystalline basement of Madagascar consists mainly of Precambrian rocks. Madagascar is positioned within |
 | | Journal (article/letter/editorial) |
| 5 I.J 57 GEOLOGIC&L NOTES OF A JOURNEY IN MADAGASCAR. 7. Gr.oroaIcxL NoTEs of a JOURNEY in ~fXDAGASCAR...journey of about 1200 miles in the island of Madagascar, during which I was able to make a few geological...but, as so little is known of the geology of Madagascar, a general sketch may not b e without value....covers so wide an area in the eastern haft of Madagascar, is, for the most part, of a greyish or bluish-grey...essentially of felspar (orthoclase and plagioclase), quartz, dark mica, and hornblende. I t not infrequently |
 | | Report (issue) |
| ultramafic rocks; also detrital in placers. Association: Quartz, muscovite, albite, beryl, columbite, tourmaline...From Miakanjovato, near Lake Alaotra, northeast of Ambatosoratra, Madagascar. Near Masvingo (Ft. Victoria) |
 | | Book |
| 8 Front cover: A Spessartite garnet in mica, Madagascar (Sorbonne collection) 0.08 inch. B Tourmaline...(Sorbonne collection) 6 inches. Right: Rutile in quartz, lbitiara, Bahia, Brazil (Yves Gillet collection...of rhodochrosite. 10 Amazonstone and smoky quartz, Lake George, Park Co., Colorado (Coil family- Richard...levels of artistry with much harder minerals such as quartz, carnelian, lapis-lazuli, etc. Phenicians, Cretans...from Persia, jade from China, opal from Hungary, quartz from the Alps, agates and carnelians from various |
 | | Catalog/List |
| Mn SiO 608 BARITES Nice sharp while crystals on quartz and siderile crystals. A) one xl b) 2 or 3 xls...about 5mm size Brown masses and small crystals on quartz. Good location pieces 4mm deep blue pure sphere...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 |
 | | Journal (article/letter/editorial) |
| PEGMATITES OF THE ANTSIRABE-KITSAMBY DISTRICT, MADAGASCAR WESTON BOURRET* Box 409, Pauma Valley, CA 92061...pegmatites of the Antsirabe-Kitsamby district, Madagascar. In: J.W. Gabelman (Editor), Unconventional Uranium...Uranium Deposits. Ore Geol. Rev., 3:177-191. Madagascar, sixth largest island in the world, is about...euxenite-bearing Tertiary lake sediments near Vinaninkarena, south of Antsirabe in Central Madagascar. Interest in...pegmatites are identified by a central massive quartz core in deeply lateritized terrain. In simplest |
 | | Book |
| many people who, on seeing a crystal of pyrite or quartz, can scarcely believe that it is the work of Nature...before our very eyes, as a result of deposits in sea, lake and river water, often under the influence of biological...equals 2.54 centimeters. Carbon Diamond Silica Quartz and its varieties Opal Amethyst Common or rare...Prehnite 44 Pronsite 64 Pyrite 60 Pyromorphite 78 Quartz and its varieties . 16 Realgar 66 Rhodocrosite.... ; L *'/ I . ' ' 1 Silica Quartz and its varieties Quartz consists of a combination of the two |
 | | 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...Al CO/3_____________ £5___ Rich orange masses in quartz, under Flux Canyon.Santa Cruz 1x2 £10 'A x 'A £2...group____________ Attractive green with white perthitic Madagascar AMAZONITE 60 2x3inch £5 Feldspar________________...40 521 APATITE Quite rich, blue-grey masses in Quartz Gunheath Pit,St Austell,Cornwall large 1x2 £4 CaF |
 | | Catalog/List |
| -----·- -Large bro~n well formed dodecahedral Madagascar Iins£4 ALMANDINE . &.8":1C~ ~~P.. . .. ~rystal...······ · •• . . • 3 ALUNITE Rich orange masses in quartz, under Flu.x Canyon,Santa Cruz lx2£10 ½x½ £2 lxl...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...- - •• • • •• Quite rich, blue-grey mnsses in Quartz Gun heath Pit.SI Austell.Cornwall large I x2 £4 |
 | | Catalog/List |
| Grunerite Rich blue-grey massive with possible quartz BeAISiO lxl £2 lx2 £4 2x3 £12 lxl £1.50 -- ----...normal shape ,about I inch Black chunky masses in quartz . From a remote location lxl£4 lx2£8 2x2£12 2x3£l9...ostergotsland, Sweden single blue 3mm crystal on quartz Several pink areas around Sm size on pale green...sheaves in silvery schist Quite rich yellow mass in Quartz or Beryl Amphibole lxl £4 lx2 £8 Be Al 0 Jxl £2...Wermland, Sweden Quite rich blue-grey masses in quartz rich black grains in pale dolomite. Possible minor |
 | | Catalog/List |
| white sheafy, masses single blue 3mm crystal on quartz TiO lxl £3 Ix2 £5 2x2 £10 feldspar £5 ····- ~-------·-·--...area, South Norway Quite rich pink masses with quartz and or mica Rich red granular mass, mixed with...£12 650 APATITE Carrock Mine Cumbria Greenish in Quartz. Will fluoresce pale yellow with short wave U.V...CaPO/3OHSO/4H/2 694 ARDENNITE Orange cleavages on quartz l x \I, £4 36 121 ANNABERGITE Ait Hamane Morocco...crystals . two or three micro crystals on small quartz crystals, Fluorescent yellow LW ½ x ½ £4 Co Fe |
 | | 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...G erias B razil Jx2 £ 1 2 x2 £2 Greenish in Quartz. Will fluo resce pale yellow with short wave U...Variety FRANCOLITE rich white cellular mass £1.20 Madagascar Terminated single brownish -grey crystal I inch...refer to height £4 Quite rich, blue-grey masses in Quartz with Gunheath Pit,St Austell.Cornwall large minor |
 | | Catalog/List |
| Tysse, Hardanger,Norway single blue 3mm crystal on quartz no £5 -------------------------933 ANATASE Hingston...Cabracao, Minho, Portugal Quite rich pink masses with quartz and or mica ..:l..:x:_I£::.:2.:....__ _ _l_:_x2_:...Devo, ■ APATITE Carrock Mine CUmbria Greenish in Quartz. Will fluoresce pale yellow with short wave U.V...Feldspar lx2 £4 2x2 £8 1119 AXINITE 768 APATITE Madagascar Terminated single brownish -grey crystal good... Cornwall two or three micro crystals on small quartz crystals, Fluorescent yellow L W lxl £3 lx2 £5 |
 | | 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 |
| ✓ 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...blue-grey masses in Quartz with ✓ Gunheath Pit.St Austell.Cornwall minor Mica Madagascar T erminated single...crystal good form, sizes refer to height Francois Lake, British Columbia. (CarbonateFluorapatite) Brown...oolitic in red - brown matrix Thin green coating on quartz l x l £5.50 5mm £6 l x l 50p Uaux. Provence |
 | | 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...watercolor by Valter Fogato Title Page Photos Quartz crystal with hematite from Mangatobangy, IO cm |
 | | Catalog/List |
| Gocthite and Lepidocrocitc. single blue 3mm crystal on quartz fcO Ot I Cl £5 3mm£3 ,o _____ __ ___T _ _____ _...FLUORESENCE short wave Quite rich pink masses with quartz and or mica lxl £3 FLUORESENT lx2£6 2x2£l 2 lx2...Tarascon, Pyrcnees France 1094 Orange cleavages on quartz Pure very faintly purple cleavage mass Mn(AI.Mg)...650 Rich masses with a few Cl)'Stals Greenish in Quartz . Will fluoresce pale yellow w ith short wave U...Calcite crystals two or three micro crystals on small quartz crystals, Fluor�sccnt yellow LW F L U OR E SCE |
 | | Catalog/List |
| ALMANDINE Large brown well fom1ed dodecahedral Madagascar I ins£4 garnet group Crystal I inch across ALSTONITE...IxI£-l Flux Canyon.Sanln Cruz Rich orange masses in quartz. under 1/, x ½ £2 y K Al S0/4 OH _ _ magnification...__ County. _ AI1zona 60 AMAZO:-;ITE 2x3i nch£5 Madagascar Anractive green with white penhitic _Feldsp�ar...Comwall large I x2 Quilc rich. blue-grey masses in Quartz APATITE Ca PO/4 F wi1h minor Mica __ ___ __ --...----·Carrock Mine Cumbria l x l £I .SO J x2 £3 Greenish in Quartz _ Woll nuoresee pale APA TITE F L U O R E S C_E_N_T_ |
 | | Journal (article/letter/editorial) |
| constituted of potassium feldspar, plagioclase, quartz, amphibole, biotite and opaque minerals. Soils...agroecologies such as Brazil (Blancaneaux et al., 1993), Madagascar (Reboul, 1997; Naudin et al., 2011), USA, Canada...years’ trial of DMC systems in the highlands of Madagascar. High OM mineralization rate in Zouana might...humidicola, in: Manuel pratique du semis direct à Madagascar, Antananarivo, CIRAD III, 2008. Jones, M. J.:...agriculture systems based on Stylosanthes guianensis in Madagascar, in: Resilient food systems for a changing world/5th |
 | | Catalog/List |
| Nandan Co, China 7 23 811 single blue 3mm crystal on quartz brown chips, probably mixed with Gocthitc and Lcpidocrocitc...fibrous mass (once known as PICROLITE) lxl £5 Francois Lake, British Columbia , Canada 33 APATITE (Carbonate...Cornwall 749 two or three micro crystals on small quartz crystals, Fluorescent yellow LW F L U O R E SC...EMATITE I x I £6 I x2 £ I 2 Feldspar 2x2 £ 30 Madagascar DARYTE APATITE TalTs Well, near CurdilT Walcs...Mine, Lleyu, W a les BARYTES 98 1 650 Gra:nish in Quartz . Will fluoresce pale yellow with short wave U |
 | | Report (issue) |
| Tangan3rika, Territo,r y), Bra.zil, Argentina, and Madagascar. · Th1·oughout the war· period nu1nerous factors...so. The . pegmatite is composed essentially of quartz, albite and mica, associated (especiaJly at Malelan...schists and gneisses, the associated minerals being· quartz, mic1·ocline, touT·111aJine, ga1·net, apatite a...e m Madaga,s car, also near the no1ih end of Lake Alaotra in the north-eastern part of the island. Most...Guide-book No. 2, 1913, pp. 123-130. North shore of Lake Huron, Ontario., by W. H. Collins; Geol. Surv. Ca11ada |
 | | Journal (issue) |
| Euclase from Brazil Inclusions in Demantoid from Madagascar Photochromism Part 2 Volume 38 / No. 1 /...Demantoid Garnet from Antetezambato, Northern Madagascar—Internal Characteristics and Their Use in Deciphering... Štubňa Gem Notes Aquamarine from Manakana, Madagascar | Star Augite from Vietnam | Crocoite from Tasmania...COLOURED STONES Aquamarine from Manakana, Madagascar Madagascar is well known as a source of aquamarine...pegmatitic districts on the west side of Lake Alaotra in central Madagascar. In this case, the specific aquamarine |
 | | Book (edition) |
| Swaziland PART EIGHT MADAGASCAR AND LESSER INDIAN OCEAN ISLANDS 26 Madagascar 27 The Smaller Indian...associations concerned with developn1ent of river and lake basi11s a11d other sharecl geographic regions in...Swaziland 112. Physical map of Madagascar 113. Precipitation on Madagascar; selected climographs; physical...regions 1 14. Population density of Madagascar 115. Economic map of Madagascar 1 16. Location map, Indian Ocean...French Somaliland French Soudan b Gold Coast Madagascar Moyen Congo c Northern Rhodesia Nyasaland Portuguese |
 | | Report (issue) |
| Intermountain Association of Petroleum Geologists. Salt Lake City. Internat. Geod. Geophys. Union Assoc. Sci...Potzger, John B. Late Wisconsin chronology of the Lake Michigan basin correlated with pollen studies: Geol...establishes an awsulute chronology of events in the Lake Michigan basin as follows: Two CreeKsBowmanville...stage, 11,000 years ago; end of Lake Algonquin 8,000 years ago; Lake Chippewa low-water stage, 5,000...lakes on the Mankato drift, and for deposits of Lake Agassiz which were presumed to record the retreat |
Lake Alaotra, Alaotra-Mangoro, Madagascar