Location Found: Franklin
 Year Discovered: 1949
 Formula: ☐{Na2}{Mg3Fe23+}(Si8O22)(OH)2
 Essential Elements: Hydrogen, Iron, Magnesium, Oxygen, Silicon, Sodium
 All Elements in Formula: Hydrogen, Iron, Magnesium, Oxygen, Silicon, Sodium
 IMA Status: Approved
 To find out more about this mineral at minDat's website, follow this link   Magnesio-riebeckite

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.456. 'Magnesioriebeckite'

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.65

The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 12, No. 2 - August 1971, pg. 7New Minerals for Franklin-Sterling Validated List - Magnesioriebeckite (small article)
View IssueV. 10, No. 1 - February 1969, pg. 11Harvard Research on Franklin Minerals - Magnesioriebeckite

Non-fluorescent blue magnesioriebeckite, gray sphalerite, calcite matrix from Franklin
Non-fluorescent blue magnesioriebeckite and gray sphalerite, on a calcite matrix from Franklin, New Jersey. Photo by JVF.

Magnesioriebeckite, sphalerite, lennilenapeite and minor calcie from Franklin, NJ
Magnesio-riebeckite (blue), sphalerite (golden brown), lennilenapeite (gray brown) and minor calcie (white) from Franklin, NJ. 4 7/8" x 3 1/4". From the collection of, and photo by Robert A. Boymistruk.

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