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Shop our premium powder ore samples designed for accurate calibration in geochemical labs.

Top selling Certified Reference Materials

  • Dolomite
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    Price range: $66.00 through $623.17 Select options This product has multiple variants. The options may be chosen on the product page

    Dolomite CaO 25.1% MgO 16.8% ZA- Amis0547

    Dolomitic rocks contain more than 50% of both calcite and dolomite minerals in which dolomite is more abundant than calcite. Theoretically, pure dolomite contains: CaO: 30.4%, MgO: 21.8%, CO2: 47.8%. Impurities in dolomite include clay minerals and chert.

  • Limestone
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    Price range: $66.00 through $763.00 Select options This product has multiple variants. The options may be chosen on the product page

    Limestone CaO 48.31% MgO 0.833% South Africa-Amis0461

    Limestone is an organic sedimentary rock that forms from the accumulation of shell, coral, algal, and fecal debris. It can also be a chemical sedimentary rock formed by the precipitation of calcium carbonate from lake or ocean water.

  • Copper Ores
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    Price range: $66.00 through $763.00 Select options This product has multiple variants. The options may be chosen on the product page

    Ni 0.16% Cu 0.15% 3E 0.5g/t Bushveld Nkomati ZA-Amis0318

    Economic sulphide mineralization occurs as disseminations, blebs and stringers in three zones, namely the Basal Mineralised Zone (BMZ), in the Basal Gabbro; the Main Mineralised Zone (MMZ), in the Lower Pyroxenite, and the Chromititic Peridotite Mineralised Zone (PCMZ), in the Chromititic Peridotite.

 

Why Choose US Geostandards?

Lab-Certified Powders for Precise and accurate XRF/ICP Analysis and QC control.

Matrix-Matched CRM’s for Accurate Results 

Local supplier of various CRMS

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“US Geostandards’ powder ore samples streamlined our XRF testing!” – Reliable CRMs, fast delivery. Highly recommend!” – US Vanadium LLC.

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Contact us at info@usgeostandards.com for tailored matrix matched powder certified reference materials for your XRF or ICP analysis needs.

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