12) cleavage. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...act of splitting or cleaving. 2. The state of being split or cleft; a fissure or division. 3. Mineralogy The splitting or tendency to split of a crystallized substance...

13) vicinal. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...restricted to a limited area or neighborhood; local. 2. Relating to or being a local road. 3. Mineralogy Approximating, resembling, or taking the place of a fundamental...

14) ology, -ology, -alogy. The Columbia Guide to Standard American English. 1993
...forms, from Greek logos, and mean the science or study of, as in genealogy, geology, mineralogy, psychology, and sociology. The plurals are -ologies and -alogies....

15) asterism. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...to a following passage. 2. Astronomy A cluster of stars smaller than a constellation. 3. Mineralogy A six-rayed starlike figure optically produced in some crystal...

16) Cogswell, Joseph Green. The Columbia Encyclopedia, Sixth Edition. 2001
...librarian and bibliographer, b. Ipswich, Mass. After studying abroad, Cogswell taught mineralogy and geology at Harvard and became librarian in 1821. In 1823 he helped...

17) Agricola, Georgius. The Columbia Encyclopedia, Sixth Edition. 2001
...(ga´ork bou´r) (KEY) , 1494-1555, German physician and scientist, known as the father of mineralogy. He was a pioneer in physical geology and the first to classify...

18) 1546. 2001. The Encyclopedia of World History
...speculation to the study of rocks, publishing De natura fossilium, an early handbook of mineralogy, and De re metallica (1556), which dealt with mining and metallurgy....

19) twin. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...2. One of two identical or similar people, animals, or things; a counterpart. 3. twins Mineralogy Two interwoven crystals that are mirror images of each other. 4....

20) nodule. The American HeritageŽ Dictionary of the English Language: Fourth Edition. 2000.
...Botany A small knoblike outgrowth, as those found on the roots of many leguminous plants. 4. Mineralogy A small rounded lump of a mineral or mixture of minerals,...