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"Avantor"
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Ward's® Albite
Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.
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Ward's® Anorthoclase
Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.
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Ward's® Magnetite (Lodestone)
Spinel group; iron-black, massive; natural magnet.
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Ward's® Sphalerite (Crystalline)
Dark brown to black; polycrystalline zinc ore.
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Ward's® Anorthite
Feldspar group; calcium end member plagioclase crystals in pyroxene matrix.
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Ward's® Microcline (Pink)
Feldspar group; pink cleavages showing perthitic texture, common potassium feldspar, Mohs’ hardness of 6.
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Ward's® Quartz (Milky)
White, massive, coarse crystalline vein, Mohs’ hardness of 7.
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Ward's® Calcite (Cleavage)
Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.
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Ward's® Dolomite (Coarse)
Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.
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