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Williamsite

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Williamsite

Line pit, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA
Williamsite

Line pit, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA
Williamsite

Line pit, State Line District, Cecil Co., Maryland, USA
Williamsite

Line pit, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA
Williamsite

Line pit, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA
Williamsite

Line pit, State Line District, Cecil Co., Maryland, USA
Williamsite

Line pit, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA
Williamsite

Line pit, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA
Formula:
Mg3(Si2O5)(OH)4
Name:
Named by Charles Upham Shepard in 1848 in honor of its discoverer, Lewis White Williams [December 20, 1804 Goshen, Pennsylvania - September 19, 1873], a mineralogist and geologist of West Chester, Chester County, Pennsylvania. Williams was on the 1857 "Camel Expedition" with Lieutenant Ned Beale.
A variety of Antigorite

A translucent pale apple-green variety of antigorite.

Visit gemdat.org for gemological information about Williamsite.


Classification of Williamsite

Chemical Properties of Williamsite

Formula:
Mg3(Si2O5)(OH)4
Elements listed in formula:
H, Mg, O, Si - search for minerals with similar chemistry

Other Information

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

Internet Links for Williamsite

mindat.org URL:
https://www.mindat.org/min-27232.html
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    • Localities for Williamsite

    This 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.
    (TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • Maryland
      • Baltimore Co.
        • Bare Hills
    		Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland, 27p.
      • Harford Co.
        • Cardiff
    		Minerals of Maryland (1940) Charles Ostrander and Walter E. Price, Jr., Natural History Society of Maryland. p. 56
    Pearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 765-766.
    Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p.
    Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p.
    Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p.
    • Pennsylvania
      • Lancaster Co.
        • State Line Chromite District
          • Fulton Township
    		http://www.mindat.org/forum.php?read,11,54067,54302
    Samuel G. Gordon (1922) The Mineralogy of Pennsylvania. Pg. 204. Dana 6:1069. Ref2) American Republican, Jan. 2nd 1849 (Chester Co., Newspaper)
          • Little Britain Township
            • Texas
    		Samuel G. Gordon (1922) The Mineralogy of Pennsylvania. Pg. 204. Dana 6:1069.
    Mineral and/or Locality  
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