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ASBESTIFORM MINERALS

  
NEW ACQUISITIONS


A.

B.

C.

TREMOLITE
Witkop Mine, Ottoshoop District, Northwest Province, Republic of South Africa
Silky luster, straw yellow-golden color fibers of Tremolite form rich, fan-like aggregates and / or radiating sprays in / on matrix.  Attractive!

 

           MI-1206

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

A.

1 3/8

1

3/4

SOLD

B.

1 5/8

1 1/4

1

SOLD

C.

1 3/4

1 1/4

5/8

$  24.50

D.

1 7/8

1 1/4

5/8

$  27.50

E.

1 78

1 1/4

5/8

$  30.00


 


D.
E.

A.

B.

C.
.
D.

E.

F.

G.

RIEBECKITE Var. Crocidolite in Ironstone
Griekwastad, Northern Cape Province, Republic of South Africa
These very interesting specimens show a cross section of the banded ironstone matrix, with each specimen exhibiting two or more of the “blue asbestos” cross-fiber veinlets cutting through the banded, yellowish-brown to smoky gray ironstone matrix.  Note that on some of the specimens, the “blue asbestos” veins vary in width.  This unusual feature is particularly obvious on items E., F., H., I., J., and K, which exhibit a distinct “scalloping” of the width of one or more of the veins.  Items J. and K. are particularly large specimens, so the gram weights are given here as a measure of size, however, the specimens are not priced by the gram.  J. = 738.0 grams (= 1.63 pounds), and K. = 1,645.0 grams (= 3.63 pounds).

 




 

MI-1221

NUMBER  OF CROCIDOLITE VEINS

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

A.

2

1 3/4

1 1/8

1

$   9.50

B.

2

2

1 1/8

3/4

$ 11.00

C.

2

2

1 1/8

7/8

$ 12.50

D.

2

2 3/4

2 1/8

1 1/4

SOLD

E.

5

2 3/8

2

1

SOLD

F.

6

2 5/8

2 1/2

1 1/2

$ 28.50

G.

4

3 1/4

2 1/2

1 7/8

SOLD

H.

1

3

2 1/2

1 7/8

SOLD

I.

3

4 1/2

1 1/2

1 1/4

SOLD

J.

3

3 1/2

3 1/4

1 5/8

$ 60.00

K.

3

4 1/2

3 1/2

3 1/4

$ 75.00

L.

  1 on each
specimen.

 Lot of 2 small specimens,
each +/- 1” in the largest dimension.

$   8.00
/ lot











 


H.
I.
J.
K.


VIEW A

VIEW B

 ACTINOLITE
Selasvatn, near Fiane, 12 Mi. N. of Arendal, Aust-Adger, Norway
This exceptional example of crystallized, dark green Actinolite has more than 100 prismatic, dark green crystals in open vugs on the front of the  specimen (View A).  Many of the crystals are terminated (terminations are best appreciated with 10X magnification).  The back of the specimen (View B) exhibits elongated, fan-like sprays composed of non-terminated, needle-like Actinolite prisms.  The size of the largest fan-like spray is 4 3/4” in length and 1 1/4” wide.  No rock matrix.  Beautiful specimen!
Specimen size:  5 7/8” X 3 5/8” across, X 2” thick.
Order Item MI-1222
Price:  $80.00 SOLD




 


A.

B.

C.

D.

YUKSPORITE
Mt. Yukspor, Chibiny (Khibina) Alkaline Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia (type locale)
Yuksporite is a complex Ti-bearing silicate with the composition: (K,Ba)NaCa2(Si,Ti)4O11(F,OH)·H2O.  It was first described from this locality circa 1959.  Yuksporite is compact, acicular to fibrous to asbestiform in structure, pale pink to pale tan in color.  All specimens have labels from the Fersman Mineralogial Museum in Moscow.

 





 

 

MI-1226

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

A.

5/8

3/8+

1/8

$   7.50

B.

1/2

1/2

3/8

SOLD

C.

2 1/8

1 3/8

5/8

$ 40.00

D.

2 3/4

1 1/2

3/8

$ 42.50

E.

 Lot of 2 small specimens,
+/- 1/8” to 1/2”, @

$   7.50
/ lot





 


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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