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Lennilenapeite

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Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
© 2007, JGW

Show Lennilenapeite Photos (2)
Formula:
K
 
6-7
(Mg,Mn,Fe,Zn)
 
48
(Si,Al)
 
72
(O,OH)
 
216
·16H
 
2
O
System:TriclinicHardness:3
Name:After the Lenni Lenape Indian tribe which inhabited the area around Franklin, NJ.
This page provides mineralogical data about Lennilenapeite.

Classification of Lennilenapeite

IMA status:Approved
Strunz 8th edition ID:8/H.17-30
Nickel-Strunz 10th (pending) edition ID:9.EG.40

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
Dana 8th edition ID:74.1.1.2

74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
Hey's CIM Ref.:16.20.8

16 : Silicates Containing Aluminum and other Metals
20 : Aluminosilicates of Fe, Mg and alkalis
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Type Occurrence of Lennilenapeite

Type Locality:Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Year of Discovery:1984

Physical Properties of Lennilenapeite

Hardness (Mohs):3

Crystallography of Lennilenapeite

Crystal System:Triclinic
Cell Parameters:a = 21.91Å
Unit Cell Volume:V 0.00 ų (Calculated from Unit Cell)

Optical Data of Lennilenapeite

Type:Biaxial (-)
RI values: nα = 1.553 nβ = 1.594 nγ = 1.594
Maximum Birefringence:δ = 0.041

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Lennilenapeite

Formula:
K
 
6-7
(Mg,Mn,Fe,Zn)
 
48
(Si,Al)
 
72
(O,OH)
 
216
·16H
 
2
O
Essential elements:H, K, Mg, O, Si
All elements listed in formula:Al, Fe, H, K, Mg, Mn, O, Si, Zn
Common Impurities:Ca,Ba,Na

Relationship of Lennilenapeite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EG.05Cymrite
BaAl
 
2
Si
 
2
(O,OH)
 
8
·H
 
2
O
9.EG.10Naujakasite
(Na,K)
 
6
(Fe
2+
 
,Mn
2+
 
,Ca)(Al,Fe)
 
4
Si
 
8
O
 
26
9.EG.10Manganonaujakasite
Na
 
6
(Mn
2+
 
,Fe
2+
 
)Al
 
4
Si
 
8
O
 
26
9.EG.15Dmisteinbergite
Ca[Al
 
2
Si
 
2
O
 
8
]
9.EG.20Kampfite
Ba
 
12
(Si
 
11
Al
 
5
)O
 
31
(CO
 
3
)
 
8
Cl
 
5
9.EG.25Strätlingite
Ca
 
2
Al
 
2
SiO
 
7
·8H
 
2
O
9.EG.25Vertumnite
Ca
 
4
Al
 
4
Si
 
4
O
 
6
(OH)
 
24
·3H
 
2
O
9.EG.30Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
·11H
 
2
O
9.EG.30Ganophyllite
(K,Na,Ca)
 
2
Mn
 
8
(Si,Al)
 
12
(O,OH)
 
32
·8H
 
2
O
9.EG.30Tamaite
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
·21H
 
2
O
9.EG.35Coombsite
K(Mn,Fe,Mg)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.35Zussmanite
K(Fe,Mg,Mn)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.40Franklinphilite
(K,Na)
 
4
(Mn,Zn,Mg,Fe)
 
48
(Si,Al)
 
72
(O,OH)
 
216
·6H
 
2
O
9.EG.40Parsettensite
K
 
1.2
Mn
 
8
(Si,Al)
 
12
O
 
26
(OH)
 
10
9.EG.40Stilpnomelane
(K,Ca,Na)(Fe
2+
 
,Mg,Al,Fe
3+
 
)
 
8
(Si,Al)
 
12
(O,OH)
 
36
 · nH
 
2
O
9.EG.45Latiumite
K
 
2
Ca
 
6
(Si,Al)
 
11
O
 
25
(SO
 
4
,CO
 
3
)
9.EG.45Tuscanite
(K(Ca,Na)
 
6
(Si,Al)
 
10
O
 
22
[SO
 
4
,CO
 
3
,(OH)
 
2
]·H
 
2
O
9.EG.50Jagoite
(Pb,Ca)
 
3
FeSi
 
3
O
 
10
(Cl,OH)
9.EG.55Wickenburgite
CaPb
 
3
Al
 
2
Si
 
10
O
 
24
(OH)
 
6
9.EG.60Hyttsjöite
Pb
 
18
Ba
 
2
Ca
 
5
Mn
2+
2
Fe
3+
2
Si
 
30
O
 
90
Cl·6H
 
2
O
9.EG.65Armbrusterite
K
 
5
Na
 
7
Mn
 
15
[(OH)
 
10
|(Si
 
9
O
 
22
)
 
4
] · 4H
 
2
O
9.EG.70Britvinite
[Pb
 
7
(OH)
 
3
F(BO
 
3
)
 
2
(CO
 
3
)][Mg
 
4.5
(OH)
 
3
(Si
 
5
O
 
14
)]
9.EG.75Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
·5.5H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
16.20.1Glaucophane
[ ][Na
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
16.20.2Sodium-anthophyllite
16.20.3Sodium Gedrite
16.20.4Crossite
16.20.5Ferro-eckermannite
[Na][Na
 
2
][(Fe
2+
 
,Mg)
 
4
Al][(OH)
 
2
|Si
 
8
O
 
22
]
16.20.6Wonesite
(Na,K)(Mg,fe,Al)
 
6
(Al,Si)
 
8
O
 
20
(OH,F)
 
4
16.20.9Stilpnomelane
(K,Ca,Na)(Fe
2+
 
,Mg,Al,Fe
3+
 
)
 
8
(Si,Al)
 
12
(O,OH)
 
36
 · nH
 
2
O
16.20.10Glauconite
K
 
0.08
R
1
1.33
 R
2
0.67
 [][Al
 
0.13
Si
 
3.87
O
 
10
](OH)
 
2

Other Names for Lennilenapeite

Synonyms:
IMA1982-085
Other Languages:
German:Lennilenapeit
Spanish:Lennilenapeita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Lennilenapeite

Reference List:Canadian Mineralogist (1984): 22: 259-263.

American Mineralogist (1985): 70: 216.

Internet Links for Lennilenapeite

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  • Raman and XRD data at RRUFF project
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  • Lennilenapeite details from Handbook of Mineralogy (PDF)
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    Localities for Lennilenapeite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Gifu Prefecture
    		Endo, S. (2008) Chigaku Kenkyu, 57, 3-10.
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Dunn, P.J., et al: Can.Min.:22:259-263; Dunn(1995):Pt4:474-475.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 29th Oct 2009 08:18:45