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cut off grade for tantalum deposits

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  • PorterGeo Database

    PorterGeo Database

    In 1964 a new corporation, Greenbushes Tin NL was formed and open cut mining of the softer oxidised rock commenced in 1969. Tantalum mining commenced in 1992 with an ore

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  • Targeting REE deposits associated with carbonatite and alkaline

    Targeting REE deposits associated with carbonatite and alkaline

    91;No primary deposits of REEs are currently being mined in the country, and only a few (e.g., Amba Dongar, 25.70MT at 0.5% cut off grade; Indian Bureau of Mines, 2019, GSI

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  • Full article: Vanadium as a critical material: economic geology with

    Full article: Vanadium as a critical material: economic geology with

    The Häggån deposit is of particular interest as it indicates the importance of cut-off grade in resource estimation. Table 3. Grades and tonnages of selected, relatively well-documented,

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  • Occurrence of low grade concentration of niobium and

    Occurrence of low grade concentration of niobium and

    Reconnaissance geological study was earlier carried out by the author in about 3000 sq km area (Figure 2a) and taking a cut-off-grade of 150 g/t of Ta2O5, some potential areas were

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  • Cut-off Grades and Optimising the Strategic Mine Plan

    Cut-off Grades and Optimising the Strategic Mine Plan

    Cut-off grade is perhaps the least understood driver of value for a mining operation. Many believe that it is determined relatively easily by knowing the mining and extraction costs, metallurgical

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  • Critical Elements: The Rose Deposit is One of the Largest

    Critical Elements: The Rose Deposit is One of the Largest

    2011727;Critical Elements: The Rose Deposit is One of the Largest Resources of "Conflict Free" Tantalum, With a New Indicated Resource of 26,500,000 Tonnes at 1.30%

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  • Tantalum supply from artisanal and small-scale mining: A mineral

    Tantalum supply from artisanal and small-scale mining: A mineral

    2020121;Addressing this information deficit, this study presents an overview on a range of mineral economic parameters that form the framework for coltan extraction and trade in the

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  • DISCOVERING NORTH AMERICAN CRITICAL MINERALS

    DISCOVERING NORTH AMERICAN CRITICAL MINERALS

    the pegmatites of this group have a high potential for economic tantalum deposits.” •Cordero Gallium deposit in Nevada has cut off grade at 30ppm. •Greenbushes Mine, Western Australia

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  • Factors Affecting the Cut-off Grade in Mining

    Factors Affecting the Cut-off Grade in Mining

    202526;It represents the minimum metal concentration required to make extraction profitable. Several factors influence this threshold, including: 🔸 Metal Market Price: The higher the metal price, the more economically viable it

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  • DISCOVERING NORTH AMERICAN CRITICAL MINERALS

    DISCOVERING NORTH AMERICAN CRITICAL MINERALS

    the pegmatites of this group have a high potential for economic tantalum deposits.” •Cordero Gallium deposit in Nevada has cut off grade at 30ppm. •Greenbushes Mine, Western Australia

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  • Zambia, SA projects provide considerable value

    Zambia, SA projects provide considerable value

    78;As a subset of the total mineral resource, a mineral resource of 2.78-million tonnes at a grade of 2.76% TREO and 6.43% P2O5 at a 1% TREO cut-off grade was defined.

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  • Beryllium resources in New Mexico and adjacent areas

    Beryllium resources in New Mexico and adjacent areas

    At a cut-off grade of 0.02% WO3, resources were estimated as 57,703,000 tons of 0.129% Mo and 0.142% WO3. Open pit resources were estimated as 11,900,000 tons of Mexico will be

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  • WILDCAT SET TO ACQUIRE RICH MINERALISED LCT

    WILDCAT SET TO ACQUIRE RICH MINERALISED LCT

    517;The pegmatite body that contains the high-grade Tabba Tabba tantalum deposit has a Mineral Resource estimate of 318Kt at 950ppm Ta 2 O 5 for 666,200lbs Ta 2 O 5 at a

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  • DISCOVERING NORTH AMERICAN CRITICAL MINERALS

    DISCOVERING NORTH AMERICAN CRITICAL MINERALS

    the pegmatites of this group have a high potential for economic tantalum deposits.” •Cordero Gallium deposit in Nevada has cut off grade at 30ppm. •Greenbushes Mine, Western Australia

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  • Sn-W-Ta-Mo-U-REE Mineralizations Associated with Alkali Granite

    Sn-W-Ta-Mo-U-REE Mineralizations Associated with Alkali Granite

    2020930;A cut-off grade of the Abu Dabbab prospect is estimated as 100 The placers are known as Wadi Mubarak and Wadi Quaria and are located adjacent to the large Abu

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  • Critical Elements: The Rose Deposit is One of the Largest

    Critical Elements: The Rose Deposit is One of the Largest

    2011727;Critical Elements: The Rose Deposit is One of the Largest Resources of "Conflict Free" Tantalum, With a New Indicated Resource of 26,500,000 Tonnes at 1.30%

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  • REVIEW ON TANTALUM EXTRACTION BY DIFFERENT

    REVIEW ON TANTALUM EXTRACTION BY DIFFERENT

    Tantalum and niobium mineral deposits are broad over the globe, yet a considerable lot of these deposits are low grade in both niobium and tantalum content. Brazil and Australia have the

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  • Beryllium resources in New Mexico and adjacent areas

    Beryllium resources in New Mexico and adjacent areas

    At a cut-off grade of 0.02% WO3, resources were estimated as 57,703,000 tons of 0.129% Mo and 0.142% WO3. Open pit resources were estimated as 11,900,000 tons of Mexico will be

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  • Characterisation of the Mt Weld (Western Australia) niobium ore

    Characterisation of the Mt Weld (Western Australia) niobium ore

    grade niobium tantalum material was closely correlated with, and perhaps restricted to, friable sediments Table 2 Reserves and grades of Mt Weld Nb Ta deposit at different cut-off

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  • Discovery and geology of the Pilgangoora Li -Ta pegmatite

    Discovery and geology of the Pilgangoora Li -Ta pegmatite

    Pilgangoora Li -Ta pegmatite deposit, Western Australia. CET Members Day . 28 November . UWA. , containing 3.5 M tonnes of Li2O and 71 M pounds of Ta2O5. A cut -off

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  • Economic Geology of Niobium and Tantalum

    Economic Geology of Niobium and Tantalum

    Cut-off grade is typically at 100 ppm. Among other applications, scandium is useful as a grain refiner in high-strength aluminium alloys (e.g. in sports equipment), and in solid oxide fuel cells (SOFCs), which convert stored

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  • Break Even Analysis – How to Calculate the Cut-Off Grade

    Break Even Analysis – How to Calculate the Cut-Off Grade

    Cut-Off Grade (ounces per tonne) – ($150 / $1,500 =) 0.10 ounce / tonne Cut-Off Grade (grams per tonne) – (0.10 x 28.349523125 =) 2.835 grams / tonne. I have also included an example to

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  • Targeting REE deposits associated with carbonatite and alkaline

    Targeting REE deposits associated with carbonatite and alkaline

    91;No primary deposits of REEs are currently being mined in the country, and only a few (e.g., Amba Dongar, 25.70MT at 0.5% cut off grade; Indian Bureau of Mines, 2019, GSI

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  • About Lithium: Zimbabwe

    About Lithium: Zimbabwe

    In June 2017 Premier estimated resource of 20.1-million tonnes grading 1.06% lithium oxide (Li 2 O) and 51 parts per million tantalum pentoxide, using a cut-off grade of 0.5% Li 2 O. The

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  • Rare Earth Elements

    Rare Earth Elements

    1219;Korella Deposit: The Korella deposit, located about 150 km southeast of Mount Isa, was previously referred to as the PHM South deposit. Krucible Metals Ltd applied for two

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  • Tantalum Deposits

    Tantalum Deposits

    202487;Further, GSI has established a Niobium-Tantalum resource of 16.42 million tonnes with average grade of 144ppm (Nb+Ta)2O5 at 100 ppm cut off in Rewat Hill block,

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  • Sn-W-Ta-Mo-U-REE Mineralizations Associated with Alkali Granite

    Sn-W-Ta-Mo-U-REE Mineralizations Associated with Alkali Granite

    2020930;A cut-off grade of the Abu Dabbab prospect is estimated as 100 The placers are known as Wadi Mubarak and Wadi Quaria and are located adjacent to the large Abu

    WhatsAppWhatsApp:+8615138493061Get PriceGet A Quote
  • Cut-off grades explained

    Cut-off grades explained

    322;A cut-off grade is the grade of mineralisation that a deposit can be economically mined and dictates which drilling intercepts can and can’t be used in a JORC resource.

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  • Niobium

    Niobium

    1219;The tantalum content, based on the tantalum grade of 182 ppm reported in the previous (2011) resource estimate 31, is approximately 6.1 kt. The deposit has seen minimal focus over the last few years, with the

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  • Sirmac

    Sirmac

    More specifically, Nemaska Lithium intersected mineralization of up to 2.98% Li2O. This grade approaches the grade found at the Greenbushes deposit, which is the highest grade hard rock

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