Mineral hardness scale

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Possible Answers: MOHS.

Last seen on: LA Times Crossword 25 Feb 19, Monday

Random information on the term “MOHS”:

Carl Friedrich Christian Mohs (German: [moːs]; 29 January 1773 – 29 September 1839) was a German geologist and mineralogist. He was the creator of the Mohs scale of mineral hardness.[1] Mohs also introduced a classification of the crystal forms in crystal systems independently of Christian Samuel Weiss.[2]

Mohs was born in Gernrode, in the Harz mountains Germany.[3] He showed a clear interest in science at an early age and received private education before entering the University of Halle.[4]


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Mohs studied chemistry, mathematics and physics at the University of Halle.[3] In 1798 he joined the Mining Academy in Freiberg, Saxony, being student of Abraham Gottlob Werner.[3]

After assuming the position of a foreman at a mine in 1801, Mohs moved in 1802 to Austria, where he was employed in trying to identify the minerals in a private collection of the banker J. F. van der Nüll.[3] Mohs described this collection, a catalogue was printed and published.[5] In 1812 he moved to Graz where he was employed by Archduke Johann in his newly established museum and science academy, which was subsequently divided into the Joanneum and the Graz University of Technology. In 1818 Mohs was appointed successor of his former professor at the Freiberg Mining Academy A. G. Werner, who died in 1817.[3][6] In 1926 Mohs became full professor of mineralogy at the University of Vienna.[6] At the same time he was assigned curator of the Imperial Mineralogical Collection, in which the van der Nüll collection of minerals was incorporated in 1827.[7] In 1835 Mohs resigned.[3] He became Bergrath which meant being an imperial counselor in charge of mining affairs[3], published under orders from his department an instruction on mining[5] and was commissioned with the establishment of a montanistic museum in Vienna.[7]

MOHS on Wikipedia