Hessite was named in 1843 for Henri Hess, Swiss-Russian Chemist of St. Petersburg. It is a steel-gray to lead-gray mineral with a metallic luster, occuring as pseudo-cubic crystals up to 1.7 cm. This is a very soft mineral; it's Mohs' hardness is only 1.5, and it is known for its ability to be cut with a knife.
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Common molecules
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Obtained from the Inorganic Crystal Structure Database
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