chromite deposits grade


Ore Group Some Deposit Types and Examples Typical Element Associations Komatiite associated nickel deposits Mt Keith Kambalda Widgiemooltha Maggie Hays Jubilee Ni Cu Co PGE±Te S minor As Magmatic Layered mafic ultramafic intrusion deposits PGE sulphide and chromite deposits Munni Munni Ora Banda Yarawindah Vanadiferous magnetite

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possibility of larger cumulate style chromite deposit being present Using a cut off grade of % chromite an indicated lateritic resource of almost Mt at % chromite has been defined although the feasibility of extracting chromite ore and other metals is unknown Noble Resources NL 1994 Mapping by the Geological Survey of New South

Ophiolite Chromite Deposits as a New Source for the MDPI

 · Chromite sands from ophiolite chromite deposits normally used for the metallurgical grade chromite market were tested as an alternative starting raw material to produce chromite foundry sands The study of the silicate impurities assemblage showed that its mineralogy strongly affects the result of the most crucial parameter the Acid Demand

A review of the deposits and beneficiation of lower grade

This paper reviews the major deposits of lower grade chromite in the world and a wide variety of methods used for the recovery of chromium from them Gangue materials in more coarsely sized ores can be separated by gravity means whereas flotation techniques are required for finer grained materials However unless there is considerable iron in the ores physical means

Chromite Department for Energy and Mining

Economic deposits form by crystallisation of chromite from a cooling magma resulting in large stratiform deposits or smaller pod like deposits The most significant occur in large layered igneous intrusions in shield areas older than billion years The largest and best known of these is the Bushveld Complex Republic of South Africa which extends over 12 000 km 2 and

podiform chromite deposits database and grade and tonnage

Podiform Chromite Deposits Database And Grade And Tonnage pris 171 heftet 2022 sendes innen 5 7 virkedager kj p boken podiform chromite deposits database and grade and tonnage models av u s department of the interior isbn 9781499701982 hos fri frakt fra {0} kr vi har mer enn 10 millioner b ker finn din neste leseopplevelse i dag alltid lave priser fri frakt

Archean Komatiitic Sill hosted Chromite Deposits in the

01/08/2022 · Lenticular chromite deposits of widely varying age metamorphic grade and strain rate as well as size shape and ore quality are widespread in greenschist to amphibolite grade greenstonegneiss terrain in the south central part of the Zimbabwe craton and in granulite grade equivalents in the Northern Marginal zone of the Limpopo belt in the far south

Geocon 2022 Article

The chromite deposits in the ultramafic tectonites of the Dinagat Ophiolite Suite generally occur as massive irregular shaped and podiform bodies as alternating banded masses within a 5 10 meters breadth and as low grade nodular or disseminated type deposits The chromite grades average between 30% and as high as 65% chromic oxide and chrome iron ratio of which


•They constitute approx 3% of Zimbabwe s chromite resource •Areas with chromite resources are scattered in the Southern side of Zimbabwe mostly concentrated in the Midlands PODIFORM •Chrome fines generated from seams by a natural process of weathering •Eluvials chromite concentrations vary between 3 and 30% Cr2O3 in the

[PDF] Podiform Chromite Deposits Database And Grade And

Download or Read online Podiform Chromite Deposits Database And Grade And Tonnage Models full HQ books Available in PDF ePub and Kindle We cannot guarantee that Podiform Chromite Deposits Database And Grade And Tonnage Models book is available Click Get Book button to download or read books you can choose FREE Trial service Join over

Genesis of Low Grade Chromite Ore Deposits in Lateritic

Genesis of Low Grade Chromite Ore Deposits in Lateritic Soils from the Philippines Authors Authors and affiliations G Friedrich Conference paper 668 Downloads Part of the Special Publication of the Society for Geology Applied to Mineral Deposits book series MINERAL DEPOS volume 2 Abstract Deep in situ weathering of ultramafic rocks of different

Evaluation of Chromite Recovery from Shaking Table

Battyet al in 1947 produced a concentrate with % Cr 2 O 3 grade at a recovery of 77% [18] from Fairview chromite deposit with an average composition of % Cr 2 O 3 by jigging which is the most popular method for coarse or lump chromite ores A A Seifelnasr in 2022 successfully used a shaking table to produce a concentrate from


05/11/2022 · Chromite deposits occur in California Oregon and Washington as sackform bodies in ultrabasic rocks or in serpentine derived from them Most deposits are small and exploration and discovery costs are high Much of the chromite is of metallurgical grade Characteristic deposits are described in references given in the bibliography at the end of

9 Ore Deposits and Economic Minerals Mineralogy

A high grade ore deposit may be uneconomical to mine if the reserves are low because start up costs could consume all profits A large high grade deposit may be uneconomical to mine if it is in a remote area Even large developed deposits can become uneconomical if the market price falls perhaps due to the discovery of a better deposit somewhere else The Bingham


INTRODUCTION History of mining Mining of metallurgical grade chromite ore began in the Philippines at the Acoje mine in 1933 and four years later mining started at the giant refractory grade chromite deposit at Goto near Masinloc From 1933 to the end of 1964 Philippine production of both ore types is believed to have totaled approximately

National Mineral Inventory An Overview CHROMITE

The resources of refractory grade chromite is limited which constitutes 48 million tonnes 14% of the total resources Besides considerable quantity of about 38 million tonnes 11% is held by unclassified grade while aboutmedium grade and low grade deposits according to the incidence of iron in the ore Ore is being processed by

Mineral Resource of the Month Chromium EARTH Magazine

Chromite has been mined from four different deposit types stratiform chromite podiform chromite placer chromite and laterite deposits Most of the world s resources however are located in stratiform chromite deposits such as the Bushveld Complex in South Africa The economic potential of chromite resources depends on the thickness and continuity of the

Podiform Chromite Deposits Database and Grade and Tonnage

Of these 619 deposits have been used to create three new grade and tonnage models for podiform chromite deposits The major podiform chromite model has a median tonnage of 11 000 metric tons and a mean grade of 45 percent Cr2O3 The minor podiform chromite model has a median tonnage of 100 metric tons and a mean grade of 43 percent Cr2O3 The