Lennilenapeite

General Information:
 Chemical Formula:
K6-7(Mg,Mn,Fe++,Fe+++,Zn)48(Si,Al)72(O,OH)216·16(H2O)
 IMA Status:
Approved IMA 1982
 Locality:
Franklin, Sussex County, New Jersey, USA.
 Name Origin:
Named for the Lenni Lenape Native American tribe, who first inhabited the type locality region.
Physical Properties:
 Cleavage:
[001] Perfect, [1] Indistinct
 Color:
brownish black, green, light green, or dark brown.
 Density:
2.72
 Diaphaniety:
Translucent to opaque
 Hardness:
3 - Calcite
 Luster:
Vitreous - Resinous
 Streak:
brown
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