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Cleavelandite

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Name:Named in 1823 by Henry J. Brooke in honor of Parker Cleaveland [January 15, 1780 Rowley (Byfield), Massachusetts, USA - August 15, 1758, in Brunswick, Maine, USA], professor of geology and mineralogy at Bowdoin College in Maine 1805-1858. In 1816 Cleaveland wrote the first mineralogy textbook authored by a citizen of the USA. Despite the title page date, the textbook was actually released in January 1817. The textbook was noted for its unification of European schools of thought and was also popular in its second edition of 1822. Cleavelandite had been described earlier in 1817 by Johann Friedrich Ludwig Hausmann with the name "kieselspath". In 1815, Hans Peter Eggertz named granular and radiated albite, probably identical to cleavelandite of Brooke. In 1936, Harold Lattimore Alling defined cleavelandite as a triclinic mineral, suggesting a difference from true albite as well as "analbite". Fisher (1968) studied cleavelandite from Chesterfield, Massachusetts, USA, the type locality, but did not study type specimens, and proposed that true cleavelandite should be restricted to warped platy masses of mineral with lamellae parallel to (010) and "lack other well-defined crystal faces, and may be twinned on the albite law". This definition would not include most specimens called "cleavelandite", especially those cleavelandites grown into open cavities, although such "cleavelandite" is also known from the type locality. The current use of the varietal name generally includes cavity hosted crystal aggregates.
A variety of Albite

Platy albite, generally found in pegmatite.

Classification of Cleavelandite

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Other Names for Cleavelandite

Synonyms:
Clevelandite
Other Languages:
German:Cleavelandit
Clevelandit
Simplified Chinese:叶钠长石
Spanish:Cleavelandita
Clevelandita
Traditional Chinese:葉鈉長石

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Cleavelandite

Reference List:

- +
Dana's New Mineralogy, 8th ed., 1997, by Gaines, et.al.

Manual of Mineralogy after James D. Dana, 1977, by C. Klein & C.S. Hurlbut, Jr.

Maine Mineralogy, V.-I, 1994, by V. King & E. Foord.


Maine Mineralogy, V.-II, 2000, by V. King.

Internet Links for Cleavelandite

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    Localities for Cleavelandite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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