Rublev Colours Limonite is yellow earth pigment from a natural mixture of minerals obtained in Cyprus. Limonite is not a true mineral but a mixture of similar hydrated iron oxide minerals. Limonite is mostly made up of the mineral goethite.
Rublev Colours Aqueous Dispersions are pigments dispersed in water ready to be mixed with water-based mediums. These dispersions are especially made for use with traditional painting mediums, such as egg tempera, casein tempera, fresco, watercolors and distemper (glue tempera). They are also ideally suited for use with gesso to make toned grounds for drawing and painting. Pigment dispersions from Rublev Colours contain only naturally-derived ingredients, in addition to pigment and water, making them ideally suited for traditional mediums. Unlike other pigment dispersions that are typically made for acrylic medium, Rublev Colours Aqueous Dispersions do not contain coalescent solvents, artificial dispersing resins and other additives that interfere with natural mediums. Aqueous Dispersions make preparing traditional mediums easy; you do not have to hassle with powders, grinding pigments in medium and calculating binder ratios to make water-based paint. They make adding the right amount of paint binder, such as egg yolk, a no brainer because the right amount of water is already contained in the dispersion, simply add egg yolk.
Origin and History
Known since antiquity, limonite is the 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. Limonite is named from the Greek word for "meadow," an allusion to its occurrence as a "bog ore" in meadows and marshes.
Rublev Colours Limonite is yellow earth pigment from a natural mixture of minerals obtained in Cyprus. Limonite is a natural earth containing clay tinted by hydrated iron oxide and traces of calcium sulfate (gypsum) or calcium carbonate (chalk). Limonite is a general term used to describe all forms of hydrated iron oxide minerals (FeOOH) that occur as natural clay or earth. Limonite includes the minerals goethite, akaganeite and lepidocrocite. Limonite 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 limonite varies from yellow to brownish-black.
Permanence and Compatibility
Limonite is among the most permanent colors among the artists' palette. It is compatible with all other pigments, and can be used with good results in all mediums.
Oil Absorption and Grinding
Limonite absorbs a moderate amount of oil. The oil absorption ratio is 35 parts by weight of linseed oil to 100 parts by weight of pigment. If the measurement were grams, limonite would require 35 grams of linseed oil to grind 100 grams of pigment to form a stiff paste.
Limonite is not considered toxic, but care should be used in handling the dry powder pigment to avoid inhaling the dust.
Aqueous Dispersion: Limonite
Limonite 2 Fl Oz
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