Dypingite



Dypingite, a magnesium carbonate hydroxide hydrate mineral, was identified by Dunn (1979c) from the north orebody at Sterling Hill, but has not been reported from Franklin. It occurs as 0.5 mm hemispherules composed of flattened crystals and is bright white with a pearly luster. It was verified using X-ray powder diffraction methods, a microprobe determination of Mg as the only detectable cation, and a positive acid test for carbonate. Sterling Hill dypingite is fluorescent in ultraviolet, with a blue color in both longwave and shortwave.
The distribution of dypingite spherules on matrix surfaces is not entirely random; they form meandering chains resembling linked colons (:::::::). The pattern of these chains is apparently not related to grain boundaries of the underlying franklinite and willemite matrix minerals and may have been inherited from a now-dissolved precursor. (Dunn, 1995)


 Location Found: Franklin and Ogdensburg
     
 
 Year Discovered: 1961
     
 Formula: Mg5(CO3)4(OH)2 · 5H2O
 Essential Elements: Carbon, Hydrogen, Magnesium, Oxygen
 All Elements in Formula: Carbon, Hydrogen, Magnesium, Oxygen
     
 IMA Status: Approved 1970
     
Fluorescent Mineral Properties

 Shortwave UV light: Moderately bright pale blue to white
 Mid wave UV light: Moderately bright pale blue to white
 Longwave UV light: Moderately bright pale blue to white
 Additional Information: Phosphoresces moderately bright pale blue to white
     
 To find out more about this mineral at minDat's website, follow this link   Dypingite

     
 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.620


The Picking Table References
 PT Issue and PageDescription / Comment
V. 57, No. 2 - Fall 2016, pg. 16Fluorescent Minerals of Franklin and Sterling Hill, N.J., Part 1, Richard C. Bostwick - Dypingite
View IssueV. 33, No. 2 - Fall 1992, pg. 10The Check List of Franklin-Sterling Hill Fluorescent Minerals - Dypingite (Fluorescent Info)
View IssueV. 20, No. 2 - September 1979, pg. 9Contributions to the Mineralogy of Franklin and Sterling Hill New Jersey, Dypingite (small article)
     
Images

     
Dypingite micro-mineral spheres on red willemite / franklinite ore, image width 2 inchesDypingite micro-mineral spheres on red willemite / franklinite ore, image width 2 inches under longwave UV Light
Dypingite micro-mineral spheres (white) on willemite (brick red) / franklinite (black) ore, image width 2" (51 mm). From the collection of, and photo by JVF.
Dypingite micro-mineral spheres on willemite / franklinite ore under longwave UV light. The dypingite fluoresces blue and the willemite green, franklinite is non-fluorescent. Image width 2" (51 mm). From the collection of, and photo by JVF.
Dypingite micro-mineral spheres on red willemite / franklinite ore, image width 2 inches under shortwave UV Light
Dypingite micro-mineral spheres on willemite / franklinite ore under shortwave UV light. The dypingite fluoresces blue and the willemite green, franklinite is non-fluorescent. Image width 2" (51 mm). From the collection of, and photo by JVF.







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