APATITE, M-75A.  Canada. Green to brown crystal prism sections.
Pieces of prisms showing some faces and some complete crystals.  Good for hard-
ness testing. 1-1.5 inch.  class pack of 20

ARAGONITE, M-80.  California. Nearly
white to yellow, acicular to columnar masses.
Some larger sizes available.

ARSENOPYRITE, M-85.Utah.  Gray metallic. Only small pieces presently available. A few larger.

Inquire.

ASBESTOS, see CHRYSOTILE.

ASTROPHYLLITE, M-90. Colorado.
Thin, brass colored blades in rock . . . 2"x3"
largest. Check for availability - very limited

AUGITE M-95. Canada. Greenish
black pyroxene. Will or can be broken to show
the cleavage. Some residual  iron staining. 

AZURITE, M-100. Larger sizes price based on quality.
Azurite coating and impregnating limonite. May be
associated with other minerals. Best quality available.

AZURlTE, M-100A. Other locations - check for availability

BARITE, M-105. Missouri. White, platy
masses with some iron oxide staining. Check.

BARITE, M-105A.  Nevada.
White to gray or brown, medium to fine
Grain Sugary- masses. 

BARITE, M-105B. Nevada.
Dark gray to black, medium to fine grain.

BASTNAESITE, M-110. 
California. Flesh to reddish masses from
1 to over 3 mm in carbonatite rock. Check for availability. 

BAUXITE, M-115. Arkansas. Gray,
red, brown or buff, typical for locality. 

BENTONITE, see MONTMORILLONITE

BERYL, M-120. South Dakota.
White to yellowish masses. Some brown
iron stain on fracture lines. 

BIOTITE MICA, M-125.Canada.
Black, vitreous cleavage mica books.

Check for alternate location.
  
BORAX (TINCAL), M-130. California. Glassy, 

colorless medium to coarse grain crystalline. Superficially
altering to white tincalconite.  Check

BORNITE, M-135. Flambeau mine, Wisconsin.
Rich, nearly pure iridescent masses with
minor occasional pyrite. 

BORNITE, M-135B. Wisconsin.

Botryoidal to sub-crystalline masses. 

This bornite represents classic chemical weathering. 

An environment of supergene enrichment with a 

fluctuating water table enabled this type of bornite to be form.

Limited supply, the mine is closed and has been reclaimed.  Individually priced.

BOULANGERITE, M-140. 
Washington. Nearly pure, gray metallic
masses.