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Roeblingite Hendricksite & Hancockite

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JYJ74080

Roeblingite Hendricksite & Hancockite

ex. R. Feigl

Description Tabs

Description
Locality: 
Franklin Mine, Franklin, Sussex County, New Jersey, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3 × 2.5 cm
Description

White roeblingite, black hendricksite and red spots of epidote-(Pb) (hancockite).

Mineral Data
What's on the rock

Roeblingite

Formula: 
Pb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2·4H2O
Strunz: 
9.CB.05
Hardness: 
3.0
Streak: 
White
Type Locality: 
Parker Mine (Parker shaft), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Hendricksite

Formula: 
K(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2
Strunz: 
9.EC.20
Hardness: 
0.0
Type Locality: 
Buckwheat pit (Southwest opening; Buckwheat Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Hancockite

Variety Of: 

Epidote-(Pb)

Formula: 
{CaPb}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05
Hardness: 
6.0 - 7.0
Formula: 
{CaPb}{Al2(Fe3+,Mn3+)}(Si2O7)(SiO4)O(OH)
Hardness: 
6.0 - 7.0
Streak: 
White
Type Locality: 
Parker Mine (Parker shaft), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
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