Location Found: Franklin (Type Locality)
 Year Discovered: 1967
 Formula: Ca0.5(K,Na)0.5(Mn,Fe,Zn)10(Si,Al)16O38(OH)8 · 5.5H2O
 Essential Elements: Calcium, Hydrogen, Manganese, Oxygen, Potassium, Silicon
 All Elements in Formula: Aluminum, Calcium, Hydrogen, Iron, Manganese, Oxygen, Potassium, Silicon, Sodium, Zinc
 IMA Status: Approved 1967
 To find out more about this mineral at minDat's website, follow this link   Bannisterite

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.487

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.44

The Picking Table References
 PT Issue and PageDescription / Comment
View IssueV. 34, No. 2 - Fall 1993, pg. 32Research Report The Crystal Structure of Bannisterite
View IssueV. 23, No. 1 - Spring 1982, pg. 15Mineral Notes Research Reports, Bannisterite
View IssueV. 10, No. 1 - February 1969, pg. 6Mineral Notes - Bannisterite/Ganophyllite/Stilpnomelane
View IssueV. 8, No. 2 - August 1967, pg. 8Mineralogical Data - Bannisterite/Ganophyllite

Bannisterite, minor Willemite and Franklinite from Franklin, NJ.
Bannisterite (dark brown), minor Willemite (red-brown) and Franklinite (black) from Franklin, NJ. Photo by Robert A. Boymistruk.

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