 | | Journal (article/letter/editorial) | | 36 Cryptic variation in the Kapalagulu layered intrusion, western Tanzania W. J. WADSWORTH Department...University, Riyadh, Saudi Arabia ABSTRACT. The Kapalagulu intrusion displays the followingsequence of cumulus...clinopyroxene Ca46Mg45Fe9 to Ca4aMga7Fe21 and plagioclase An88_ao. Reversals of the cryptic variation occur...in single crystals. THE Kapalagulu intrusion is situated in western Tanzania, close to the eastern shore...shore of Lake Tanganyika, 100 km south of Kigoma. It has a narrow outcrop, approximately 15 km long and |  | Maier, W.D., Barnes, S.-J., Bandyayera, D., Livesey, T., Li, C., Ripley, E. (2008) Early Kibaran rift-related mafic–ultramafic magmatism in western Tanzania and Burundi: Petrogenesis and ore potential of the Kapalagulu and Musongati layered intrusions. Lithos, 101 (1) 24-53 doi:10.1016/j.lithos.2007.07.015 | Journal (article/letter/editorial) | | magmatism in western Tanzania and Burundi: Petrogenesis and ore potential of the Kapalagulu and Musongati layered...Available online 17 August 2007 Abstract The Kapalagulu and Musongati intrusions are differentiated mafic–ultramafic...Kabanga–Musongati belt of intrusions in western Tanzania and Burundi. The intrusions of the Kabanga–Musongati...assimilated ca. 5% of sedimentary material, whereas the Kapalagulu magma assimilated ca. 15% of sediment. Contamination...isotopic signatures (δ34S = + 4.5 to + 20). At Kapalagulu, contamination of the parent magma led to the |  | | Journal (article/letter/editorial) | | Platinum mineralization in the Kapalagulu Intrusion, western Tanzania Harry R. Wilhelmij 1,2 & Louis...of a layered gabbro complex known as the Kapalagulu Intrusion, emplaced between the Paleoproterozoic Ubendian...within the southeastern extension of the Kapalagulu Intrusion (known as the Lubalisi Zone) that is covered...deep drilling in the Lubalisi Zone of the Kapalagulu Intrusion shows that the folded harzburgite can be...dissolution of Pt tellurides. Keywords Tanzania . Kapalagulu Layered Intrusion . PGM-bearing harzburgite and laterite |  | | Journal (article/letter/editorial) | | AGES OF THE KABANGA NORTH AND KAPALAGULU INTRUSIONS, WESTERN TANZANIA: A RECONNAISSANCE STUDY W. D. MAIER...M5J 2S1, Canada Abstract The Kabanga North and Kapalagulu intrusions form part of a >500-km belt of intrusions...at Kabanga and Ni laterites at Musongati and Kapalagulu. Despite the economic significance of the intrusions...for the Kabanga North intrusion (1403 ± 14 Ma) and for the Kapalagulu intrusion (1392 ± 26 Ma). These...throughout the Kibaran orogenic belt, from northwest Tanzania through Burundi, and possibly as far south as |  | | Journal (article/letter/editorial) | | postcumulus processes and products in the Rhum layered intrusion W. J. Wadsworth Geological Magazine / Volume 122...postcumulus processes and products in the Rhum layered intrusion. Geological Magazine, 122, pp 549554 doi:10....postcumulus processes and products in the Rhum layered intrusion W. J. W A D S W O R T H Department of Geology...processes as exemplified by the Rhum layered intrusion. The history of the terms orthocumulate, adcumulate...accretion of crystals to the walls or roof of an intrusion (congelation cumulates), or in situ growth of |  | | Journal (article/letter/editorial) | | extension of the Kibaran intra-continental basins to Tanzania Nelson Boniface b,∗ , Volker Schenk a , Peter...Dar es Salaam, P.O. Box 35052, Dar es Salaam, Tanzania a r t i c l e i n f o Article history: Received...Available online 28 May 2014 Keywords: Zircon Monazite Tanzania Ubendian Belt Wakole Terrane Mesoproterozoic ...form the northwestern end of the Ubendian Belt in Tanzania that disappears towards the north below a Mesoproterozoic...Uganda, bound by the Angola-Kasai and Bangweulu-Tanzania Cratons (Fig. 1). In the current usage in the |  | | Journal (article/letter/editorial) | | xenoliths suffered hydrothermal alteration. Plagioclase, a main constituent of the xenoliths, has been... Pd2Si, a new mineral from the Kapalagulu Intrusion, Western Tanzania and the Bushveld Complex, South...horizon of the Kapalagulu Intrusion near the eastern shore of Lake Tanganyika, western Tanzania, as well as...Raman spectra of both minerals strong bands in the region 750–950 cm–1, with a maximum at ~840 cm–1 corresponding |  | | Journal (article/letter/editorial) | | Platinum mineralization in the Kapalagulu intrusion, western Tanzania—Harry R. Wilhelmij and Louis J...copper enrichment linked to excess aluminium in plagioclase—B.J. Williamson, R.J. Herrington, and A. Morris...alteration of Miocene volcanic units in the Gedikler region and the area surrounding the Kışladağ gold deposit |  | | Journal (article/letter/editorial) | | density of residual liquid to decrease. Removal of plagioclase, with fractionation density less than the magma...olivine-pyroxene, and pyroxene assemblages. When plagioclase joins these mafic phases magma density can sometimes...accumulate at the roof of the chamber. When plagioclase becomes a fractionating phase a zone of well-mixed...chamber. In a chamber containing well-mixed, plagioclase - saturated magma, the primitive magma can be...005 006 009 003 Synthetic diopside Akermanite Plagioclase (Any0) 1 2 3 1,400 1,400 1,250 0.80 0.84 0 |  | | Book | | perfect circular, 8-km diameter Kondyor Massif intrusion in Russia. Platinum is often found in mining of...Oktyabr’skove copper–nickel deposit of the Eastern Siberia Region, Russia and many other Cu–Ni–PGE deposits. 1.3...United States, Mechanic Pluton, Canada, Skaergaard Intrusion, East Greenland, Talnakh Cu-Ni deposit, Noril’sk...Minerals 11 The Skaergaard mafic–ultramafic intrusion is the only known source of Skaergaardite, the...Monchegorsk Cu–Ni Deposit in the Kola Peninsula, Northern Region, Russia. 1.3.1.9 Isoferroplatinum Isoferroplatinum |  | | Journal (issue) | | dolerite and the gabbro: in this layer unzoned plagioclase laths have grown at steep angles to the margin...generation of plagioclase which crystallised at deplh. The second generation of plagioclase, forming the...variation is shown by the second generation of plagioclase. In view of the lack of evidence for either magmatic...required to explain the Jack of zoning in Lhe plagioclase lalhs of the perpendicular feldspar layer. PREFACE...published their classic description of the Skaergaard intrusion in 1939. There are two main reasons for this: |  | | Journal (article/letter/editorial) | | dolerite and the gabbro : in this layer unzoned plagioclase laths have grown at steep angles to the margin...generation of plagioclase which crystallised at depth. The second generation of plagioclase, forming the...variation is shown by the second generation of plagioclase. In view of the lack of evidenee for either magmatic...required to explain the laek of zoning in the plagioclase laths of the perpendicular feldspar layer. PREFACE...puhlished their c1assic description of Lhe Skaergaard intrusion in 1939. There are two main reasons for this : |  | | Journal (article/letter/editorial) | | basalts can be accommodated in the tetrahedra plagioclase-ferroan diopside-olivine-quartz or nepheline...oversaturated nature of the magma with respect to the plagioclase-diopside-olivine plane. Consideration of crystallization...five-phase "point" (olivine, augite, hypersthene, plagioclase, liquid) and interpretation of reaction relationships...unbanded parts of the granites contain quartz, plagioclase, microciine perthites and small amounts (total...zircon, poikilitically enclosed by qtsartz, plagioclase, microcline perthite and fluorite. Opaque minerals |  | | Journal (article/letter/editorial) | | Iron Age sites at Kemondo Bay on Lake Victoria (Tanzania), in particular, at site KM3 [19–21]. 3. Irons...source is associated with the rapid upwelling and intrusion of superdeep and super-compressed high-temperature...Štiavnica (Banská Štiavnica district, Banská Bystrica region, Slovakia, 48◦ 270 2900 N 18◦ 530 4700 E), the...The Hodruša Intrusive Complex is a subvolcanic intrusion in the middle of the Banská Štiavnica stratovolcano...7 ± 0.4 to 11.4 ± 1.2 mya) [182]. The Khodrus intrusion, Klotilda vein, comprises rocks bearing iron silicides |  | Dobrzhinetskaya, Larissa, Mukhin, Pavel, Wang, Qin, Wirth, Richard, O'Bannon, Earl, Zhao, Wenxia, Eppelbaum, Lev, Sokhonchuk, Tatiana (2018) Moissanite (SiC) with metal-silicide and silicon inclusions from tuff of Israel: Raman spectroscopy and electron microscope studies. Lithos, 310. 355-368 doi:10.1016/j.lithos.2017.04.001 | Journal (article/letter/editorial) | | central part of the Easternmost Mediterranean (EMM) region. It is located between the stable Arabian shield...include rounded grains of quartz, apatite and plagioclase (anorthite) surrounded by a mass of micron-size...(Pilm - (Fe,Mg)TiO3), rounded quartz (Qtz) and plagioclase (Pl - anorthite) of 10-150 µm size are scattered...(e.g. amorphous). The nature of this amorphous region is not understood, and we will study it in further... which is where the alkaline basalts from this region formed, and temperature ranges from ≥ SC 1000-1150 |  | | Book | | from the Midcontinent Rift-Related Echo Lake Intrusion in Northern Michigan, USA Reprinted from: Minerals...from the Talnakh and Oktyabrsk Deposits, Noril’sk Region, Russia Reprinted from: Minerals 2018, 8, 339,...ophiolite, stratiform complexes and Ural-Alaskan type intrusion, and sulfides deposits and sulphide deposits in...a gabbro from the midcontinent rift Echo Lake intrusion in northern Michigan, USA. The authors found that...of the Talnakh and Oktyabrsk deposits, Noril’sk region, Russia. Due to the small size of thalhammerite |  | | Journal (article/letter/editorial) | | quartz-tourmaline veining associated with 139 greisening, intrusion of rhyolite dykes, quartz-hematite veining. Kaolinisation...the presence of lithium mica (zinnwaldite) and plagioclase (albite 177 component). The accessory minerals...(apatite, monazite, zircon 178 and rutile) or in plagioclase (apatite, fluorite and secondary micas). 179...fine-grained groundmass of quartz, K-feldspar, plagioclase, 184 zinnwaldite, tourmaline and topaz. The...189 topaz, interstitial lithium mica, albite, plagioclase feldspar with perthitic orthoclase, and subhedral |  | | Book | | the layered intrusions scene is the Panzhihua intrusion (SW China) that has been intensively studied recently...of Major Layered Intrusions 10 The Panzhihua Intrusion, SW China ����������������������������������������������������...���� R. Grant Cawthorn 517 13 Kiglapait Intrusion, Labrador ����������������������������������...horizon at near-solidus conditions across the intrusion. Rapid cooling (~ 125 °C/Ma) down to temperatures...layering (Irvine 1982) (e.g., Muskox layered intrusion, Fig. 1.1). They consist of cumulates (e.g., Figs |
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