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ASBESTIFORM MINERALS

  
NEW ACQUISITIONS
 



1188-2G.

1188-2K.

2389

2390

2391

2392

CARLOSTURANITE
Auriol Mine, Sampeyre, Val Varaita, Cuneo Province, Piedmont, Italy (type locale)

Carlosturanite was first found at this locality in 1985.  Its habit is asbestiform, with flexible fibers found in some specimens up to several centimeters in length.  Color is light brown, to pale grey.  Chemical composition is: (Mg,Fe,Ti)21(Si,Al)12O28(OH)34.H2O

On the specimens below, aggregates of pure asbestiform / fibrous, light tan to pale grey color Carlosturanite are on serpentine matrix.  Due to the long, fibrous nature of this mineral, matrix specimens are apparently more difficult to recover than examples without matrix.
 

 

 

 

 

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

 

1188-2 G

1 1/2

7/8

3/8

SOLD

 

1188-2 K

2 5/8

2 3/8

1 1/2

$  50.00

 

2389

3 3/8

1 7/8

7/8

$  50.00

 

2390

2 3/4

1 7/8

1 1/8

$  45.00

 

2391

2 1/2

2 1/8

1 1/2

$  40.00

 

2392

3 1/4

1 7/8

1 1/8

$  60.00

 

2393

3 5/8

2 1/8

1 3/8

$  80.00

 

2425

1 3/8

3/4

1.4

$  22.50

 

2426

2 3/8

1

1

$  34.50

 

2427

1 7/8

1

1/2

$  30.00

 

2428

3 3/4

1 7/8

1 1/8

$  48.50




 

2393

2425

2426

2427

2428


H.

I.
J.
K.

L.

MANGANOGRUNERITE (DANNEMORITE)
Brunsjogruvan (Brunsjo Mine), near Grythyttan, Orebro, Sweden
Manganogrunerite (formerly known as Dannemorite), a member of the amphibole group, was found at this locality as long fibrous, compact, asbestiform aggregates with a silky luster, and silvery-tan to silvery-gray color.  Chemical composition is Mn2Fe52+Si8O22(OH)2.
 

These matrix specimens are often associated with a small amount of massive black Magnetite. 
 

MI-1190

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

2 H.

1

5/8

5/8

$  5.00

2 I. 

3

1 1/2

1

$ 45.00

2 J.

2 7/8

1 3/4

1

SOLD

2 K.

3 1/4

1 3/8

1

SOLD

2 L.

4 1/4

1 1/4

5/8

SOLD

2 M.

3 1/2

1 1/4

3/4

SOLD

2 N.

3 1/2

1 1/2

5/8

$ 55.00

2 O.

5

1 7/8

1 3/4

SOLD


 
                       

 
 
 

M.

N.

O.


NOTES: 
All specimens are natural, not processed in any way from their original form. 
If you need other asbestiform minerals not described on this list please call, FAX, or email and send us your list of requirements. 

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