email: tfl3543@blackfoot.net

BEAR RIVER ZEOLITE CO., INC.
4005 East Glendale Road
Preston, ID 83263

tel: 406-827-3523
fax: 406-827-3543

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COMPARISON OF BRZ TO OTHER DOMESTIC DEPOSITS

The following table presents data giving the comparisons of bulk chemistry, mineralogy, surface area, and ammonium exchange capacity for Bear River Zeolite versus other clinoptilolites for sale by producers or marketers in the U.S. and Canada, with references to the sources of “public available” information.

Deposit or Marketer:

Location:

Zeotech

Tilden, TX

St. Cloud Mining

Winston, NM

Bear River Zeolite

Preston, ID

Oxide, weight %

Ca-rich

 

K-rich

SiO2

65.4

65.70

67.40

Al2O3

12.1

12.00

10.60

Fe2O3

1.11

1.28

1.70

MgO

0.90

1.27

0.45

CaO

4.39

3.08

2.23

Na2

1.11

0.60

0.59

K2O

1.18

2.27

4.19

TiO2

0.19

0.22

0.27

P2O5

0.09

0.12

0.10

MnO

0.10

0.06

<0.01

LOI 925OC

12.20

12.30

11.4

Data Source

-------------USGS Open-File Report 99-14 ----------------

Diluent

Minerals: (by XRD)

"-cristobalite

“clay” calcite

"-cristobalite

quartz, mica, plagioclase

"-cristobalite

quartz, mica

Surface area(m2/g)

67.1

14.1

24.9

Nitrogen exchange capacity

1.48%

1.33%

1.85-2.2%

-------------USGS Open-File Report 96-661 table 10 for exchanged Nitrogen ----------------

Deposit or Marketer:

Location:

 

Ash Meadows Zeolite

Armagosa Valley, NV

 

Oxide, Wt %

 

101

102

 

SiO2

 

66.90

68.90

 

Al2O3

 

10.50

11.00

 

Fe2O3

 

0.92

0.88

 

MgO

 

0.57

0.34

 

CaO

 

1.15

1.17

 

Na2

 

2.95

3.20

 

K2O

 

4.12

5.05

 

TiO2

 

0.11

0.11

 

P2O5

 

n.r.

n.r.

 

MnO

 

0.03

0.02

 

LOI 925OC

 

9.00

9.40

 

Data source

 

www.badgerminingcorp.com

 

Diluent Minerals: (by XRD)

 

quartz, calcite, orthoclase

 

Nitrogen exchange capacity

--------------not known for these ---------------------

Surface area(m2/g)

 

14.5

14.5