Blue Ridge Yellow Ocher Pigment, Size: 5 Kg

SKU: NAP-431-515K
    Unit Price
    Quantity
    Subtotal
    US 102.91$
    US 110.00$
    US 102.91$
    US 110.00$
    US 102.29$1%
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    Color
    Yellow
    Processing time
    Usually ships the next business day.
    Pigment type
    Inorganic, Earth, Natural
    Description

    Rublev Colours Blue Ridge Yellow Ocher is a yellow iron oxide earth pigment from a natural mixture of minerals obtained from deposits in the Blue Ridge Mountains of Virginia. Blue Ridge Yellow Ocher is not a true mineral but a mixture of similar hydrated iron oxide minerals. Blue Ridge Yellow Ocher is mostly made up of the mineral goethite.

    Pigment Names
    Common Names: English: yellow ocher
    French: ocre jaune
    German: Ockergelb
    Italian: giallo ocra
    Spanish: amarillo ocre
    Nomenclature:
    Common Name Primary Mineral Source
    Yellow ocher Goethite Blue Ridge Mountains, Virginia, USA

    Origin and History

    Known since antiquity, yellow ocher is from a natural mineral composing the pigment known as ocher (okhra in Greek). Ocher has been used as a pigment since prehistoric times and is perhaps the most widely used pigment for artists' paints.

    Source

    Rublev Colours Blue Ridge Yellow Ocher is yellow earth pigment from a natural mixture of minerals obtained from deposits in the Blue Ridge Mountains of Virginia, USA. Blue Ridge Yellow Ocher is a natural earth containing clay tinted by hydrated iron oxide and traces of calcium sulfate (gypsum) or calcium carbonate (chalk). Yellow ocher is a general term for all forms of hydrated iron oxide minerals (FeOOH) that occur as natural clay or earth. Yellow ocher includes the minerals goethite, akaganeite, and lepidocrocite. Yellow ocher forms mostly in or near oxidized iron and other metal ore deposits and as sedimentary beds. Depending upon the content of hydrated iron oxide, the color of yellow ocher varies from yellow to brownish-black.

    Permanence and Compatibility

    Yellow ocher is among the most permanent colors on artists' palettes. It is compatible with all other pigments and can be used with good results in all mediums.

    Oil Absorption and Grinding

    Blue Ridge Yellow Ocher absorbs a moderate amount of oil. The oil absorption ratio is 35 parts by the weight of linseed oil to 100 parts by the weight of pigment. If the measurement were grams, yellow ocher would require 35 grams of linseed oil to grind 100 grams of pigment to form a stiff paste.

    Toxicity

    Yellow ocher is not considered toxic, but care should be used in handling the dry powder pigment to avoid inhaling the dust.

    Pigment Information
    Color: Yellow
    Color Index: Pigment Yellow 43 (77492)
    Chemical Name: Iron Oxide Hydroxide
    Chemical Formula: a-FeOOH
    ASTM Lightfastness Rating
    Acrylic: I
    Oil: I
    Watercolor: I
    Properties
    Density: 2.9–4.3
    Hardness: 4.0–5.5
    Refractive Index: 2.260–2.398
    Shipping specs
    Weight
    11 lbs
    Shipping from
    This product is shipped from our supplier's warehouse in Willits, CA, United States
    Our guarantee
    This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
    A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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