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paragenesis

[par-uh-jen-uh-sis] /ˌpær əˈdʒɛn ə sɪs/
noun, Geology
1.
the origin of minerals or mineral deposits in contact so as to affect one another's formation.
2.
the order in which the minerals in a rock or vein have crystallized.
Origin
1850-1855
1850-55; < Neo-Latin; see para-1, genesis
Related forms
paragenetic
[par-uh-juh-net-ik] /ˌpær ə dʒəˈnɛt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for paragenesis
  • Mineral paragenesis and textural data were obtained from petrographic examination of the stained samples.
British Dictionary definitions for paragenesis

paragenesis

/ˌpærəˈdʒɛnɪsɪs/
noun
1.
a characteristic association of minerals in a particular type of rock or ore deposit
Derived Forms
paragenetic (ˌpærədʒɪˈnɛtɪk) adjective
paragenetically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for paragenesis

the sequence in which the minerals are formed in an ore deposit. Variations in the pressure and temperature and in the chemical constituents of a hydrothermal solution will result in the precipitation of various minerals at different times within the same ore deposit. The general sequence of deposition is gangue minerals (silicates and carbonates) first; oxide minerals next, with the sulfides and arsenides of iron, nickel, cobalt, and molybdenum contemporaneous with or closely following the oxides, and the lead and zinc sulfides following them; and last the native metals and tellurides followed by the antimony and mercury sulfides. The paragenesis at any particular location may be complicated if the ore deposit has been formed by more than one period of hydrothermal activity

Learn more about paragenesis with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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