HEULANDITE w/ERIONITE or OFFRETITE, ROCK ISLAND DAM, DOUGLAS COUNTY, WA

5-21-86 No. 115 5KV APER200 x750 by CMN
THIS TABLE LOOKS BEST WHEN VIEWED USING INTERNET EXPLORER. CLICK ON SEMs WITH BLUE BORDERS TO SEE ENLARGED IMAGES.

MAGNIFICATION FIGURES ARE FOR THE ORIGINAL SEMs, NOT FOR THE IMAGES YOU SEE ON YOUR COMPUTER SCREEN. I WILL BE ADDING SCALE BARS WHEN I HAVE TIME TO DO THE CALCULATIONS.


Heulandite on erioniute or offretite

    Colorless. Thick intergrown plates growing around eriionite or offretite crystals and the round balls which grow on their terminations.


5-21-86 No. 112 5KV APER200 c. x350 by CMN
Heulandite on erionite or offretite

    Colorless. Heulandite growing around rods of erionite or offretite.

4-9-86 No. 59 5KV APER200 c x304 by CMN
Heulandite on erionite or offretite

    Colorless. Detail of group seen above in SEM No. 111

5-21-86 No. 112 5KV APER200 x1000 by CMN
Heulandite on erionite or offretite with heulandite

    Detail of group seen in SEM no. 111.

4-2-86 No. 45 5KV APER200 x244 by CMN
Heulandite druze with erionite or offretite

    Colorless. Heulandite druze surrounding long rods of erionite or offretite.

4-2-86 No. 46 5KV APER200 x6100 by CMN
Erionite or offretite

    Detail of termination of long rod seen in SEM no. 45.

4-9-86 No. 61 5KV APER200 x505 by CMN
Heulandite on erionite or offretite

    Colorless. Heulandite growing around erionite or offretite bundles.

4-9-86 No. 62 5KV APER200 x302 by CMN
Heulandite on erionite or offretite

    Colorless. Complex stacks of heulandite plates, some with curved faces, growing around a forest of erionite or offretite rods.

4-9-86 No. 62 5KV APER200 x302 by CMN
Heulandite on erionite or offretite

    Closer view of one of the groups in SEM no. 62.

4-9-86 No. 62 5KV APER200 x302 by CMN
Heulandite on erionite or offretite

    Closer view of one of the groups in SEM no. 62

5-21-86 No. 116 5KV APER200 x1000 by CMN
Heulandite on erionite or offretite

    Different veiw, at higher magnification, of one of the groups seen in SEM no. 62. Notice the curving xl face.

5-21-86 No. 118 5KV APER200 x500 by CMN
Heulandite on erionite or offretite

    Colorless. Heulandite in a think forest of erionite or offretite rods.

5-21-86 No. 118 5KV APER200 x500 by CMN
Erionite or offretite thatch

    Closer look at the erionite or offretite thatch seen in SEM no. 118.

Move to SEM 119  for a more detailed view.