Calcite



Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. It is transparent to opaque and may occasionally show phosphorescence or fluorescence. Color is white or none, though shades of gray, red, orange, yellow, green, blue, violet, brown, or even black can occur when the mineral is charged with impurities.
The most common fluorescent mineral of Franklin, manganese-activated calcite under shortwave (SW) UV light fluoresces in various shades of pink and orange-red. Most specimens fluoresce slightly under longwave (LW) UV light, but calcite that fluoresces brightly under LW has at times been found. The calcite of Franklin and Ogdensburg has a very brief but intense phosphorescence.


 Location Found: Franklin and Ogdensburg
     
 
     
 Formula: CaCO3
 Essential Elements: Calcium, Carbon, Oxygen
 All Elements in Formula: Calcium, Carbon, Oxygen
     
 IMA Status: Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
     
Fluorescent Mineral Properties

 Shortwave UV light: Typically moderate to very bright deep orange-red, range of reds from orange-red to purple-red, pink, various hues of yellow, orange, green, blue, violet, and white.
 Mid wave UV light: Weaker orange-red to purple-red, yellow, orange, green, blue, violet, and white.
 Longwave UV light: Weaker orange-red to purple-red, yellow, orange, green, blue, violet, and white.
 Additional Information: Often phosphorescent (red brief intense), can change fluorescent color depending on wavelength. Not always fluorescent.
     
 To find out more about this mineral at minDat's website, follow this link   Calcite

     
 References:
Dunn, Pete J. (1995). Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits. Franklin, NJ.: The Franklin-Ogdensburg Mineralogical Society. p.609

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.47


The Picking Table References
 PT Issue and PageDescription / Comment
V. 57, No. 2 - Fall 2016, pg. 14Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Calcite
V. 52, No. 2 - Fall 2011, pg. 29Yellow-Fluorescing Calcite From Sterling Hill
View IssueV. 45, No. 1 - Spring 2004, pg. 10The Art of Fluorescent Mineral Photography, With Special Attention to the Minerals of Franklin and Sterling Hill Photographing the More Popular Franklin and Sterling Hill Fluorescent Minerals - Calcite
View IssueV. 41, No. 1 - Spring 2000, pg. 13A Scheelite-bearing Assemblage From Franklin, New Jersey By Robert E. Jenkins II - Calcite
View IssueV. 35, No. 2 - Fall 1994, pg. 20A Complex Base-Metal Assemblage From the Sterling Mine New Jersey - Calcite
View IssueV. 33, No. 2 - Fall 1992, pg. 10The Check List of Franklin-Sterling Hill Fluorescent Minerals - Calcite (Fluorescent Info)
View IssueV. 30, No. 1 - Spring 1989, pg. 8The Epidote-Pyroxene-Fluorapophyllite Assemblage in the Franklin Mine at Franklin, New Jersey, Philip P. Betancourt, Calcite (small description)
View IssueV. 27 No. 2 - Fall 1986, pg. 5Minerals of the Franklin Quarry, Philip P. Betancourt, Calcite
View IssueV. 25 No. 1 - Spring 1984, pg. 3Fluorescent Calcites a comprehensive chemical study, Gerald J. DeMenna
View IssueV. 24 No. 2 - Fall 1983, pg. 13Minerals of the Buckwheat Dolomite Franklin, New Jersey, Calcite (small description)
View IssueV. 18, No. 1 - March 1977, pg. 21The Fluorescent Minerals of Franklin and Sterling Hill, NJ by Richard C. Bostwick - Calcite
View IssueV. 13, No. 2 - August 1972, pg. 11The Fluorescent Minerals of Franklin/Ogdensburg Area by Frank Z. Edwards - Calcite (Fluorescent Info)
View IssueV. 7, No. 2 - August 1966, pg. 7The Minerals of Sterling Hill 1962-65 by Frank Z. Edwards - Calcite
     
Images

     
White calcite rectangular prism with inclusions of black willemite FranklinWhite calcite rectangular prism with inclusions of black willemite Franklin under shortwave UV Light
Calcite with inclusions of black willemite from Sterling Hill Mine, NJ. 3 1/2" x 1 1/2". Photo by WP.
Calcite with inclusions of black willemite from Sterling Hill Mine, NJ under shortwave UV light. The calcite fluoresces red-orange and the willemite green. 3 1/2" x 1 1/2". Photo by WP.


Salmon calcite Sterling Hill Mine, OgdensburgSalmon calcite Sterling Hill Mine, Ogdensburg under shortwave UV Light
Salmon calcite from the Sterling Hill Mine, Ogdensburg, NJ. Photo by WP.
Salmon calcite from the Sterling Hill Mine, Ogdensburg, NJ, under shortwave UV light. The calcite fluoresces deep red. Photo by WP.


Calcite, willemite and franklinite, from the Buckwheat Dump, Franklin NJ.Calcite, willemite and franklinite, from the Buckwheat Dump, Franklin NJ. under shortwave UV Light
Calcite, willemite and franklinite, from the Buckwheat Dump, Franklin NJ. Photo by WP.
Calcite, willemite and franklinite, from the Buckwheat Dump, Franklin NJ under shortwave UV light. The calcite fluoresces bright orange and the willemite green, franklinite is non-fluorescent. Photo by WP.


Dark Pink Fluorescent Calcite, willemite, franklinite and zincite, Trotter Dump, Franklin NJ.Dark Pink Fluorescent Calcite, willemite, franklinite and zincite, Trotter Dump, Franklin NJ. under shortwave UV Light
Calcite, willemite, franklinite and zincite from the Trotter Dump, Franklin NJ. Photo by WP.
Calcite, willemite, franklinite and zincite from the Trotter Dump, Franklin NJ under shortwave UV light. The calcite fluoresces dark pink and the willemite green, franklinite and zincite are non-fluorescent. Photo by WP.


Yellow Fluorescent calcite, willemite, franklinite and minor sphalerite, Sterling Hill Mine, NJ.Yellow Fluorescent calcite, willemite, franklinite and minor sphalerite, Sterling Hill Mine, NJ. under longwave UV Light
Calcite, willemite, franklinite and minor sphalerite from Sterling Hill Mine, NJ. From the collection of and photo by JVF.
Calcite, willemite, franklinite and minor sphalerite from Sterling Hill Mine, NJ under longwave UV light. The calcite fluoresces yellow, willemite dull green and the sphalerite orange to pink. From the collection of and photo by JVF.
Yellow Fluorescent calcite, willemite, franklinite and minor sphalerite, Sterling Hill Mine, NJ. under shortwave UV Light
Calcite, willemite, franklinite and minor sphalerite from Sterling Hill Mine, NJ under shortwave UV light. The calcite fluoresces slightly red, willemite green and the sphalerite orange-red. From the collection of and photo by JVF.


Calcite (white to gray) and minor franklinite (black), from the Buckwheat Dump, Franklin NJ. Photo by WP.Calcite (white to gray) and minor franklinite (black), from the Buckwheat Dump, Franklin NJ. Photo by WP. under longwave UV Light
Calcite (white to gray) and minor franklinite (black), from the Buckwheat Dump, Franklin NJ. Photo by WP.
Calcite and minor franklinite, from the Buckwheat Dump, Franklin NJ under longwave UV light. The calcite fluoresces blue and dark pink, franklinite is non-fluorescent. Photo by WP.
Calcite (white to gray) and minor franklinite (black), from the Buckwheat Dump, Franklin NJ. Photo by WP. under midwave UV LightCalcite (white to gray) and minor franklinite (black), from the Buckwheat Dump, Franklin NJ. Photo by WP. under shortwave UV Light
Calcite and minor franklinite, from the Buckwheat Dump, Franklin NJ under mid-wave UV light. The calcite fluoresces blue, franklinite is non-fluorescent. Photo by WP.
Calcite and minor franklinite, from the Buckwheat Dump, Franklin NJ under shortwave UV light. The calcite fluoresces red-orange, franklinite is non-fluorescent. Photo by WP.


Boxwork weathered calcite from Mudzone Passaic Pit at Sterling Hill Mine, Ogdensburg, NJ
Weathered calcite boxwork, coated with hemimorphite crystals from Mudzone Passaic Pit at Sterling Hill Mine, Ogdensburg, NJ. Field of view 3.5" x 3". From the collection of Zack and Ralph Bonard, photo by WP.







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