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 February 2007 Update

Cornog Trap Rock Quarry

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  Jim@LEHIGHMINERALS.com

            
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This gallery is a collection of Cornog Traprock Quarry specimens from an old Pennsylvania collection.  This is a trap rock quarry of precambrian amphhibolite gneiss.  It is an Alpine type deposit of Andularia, Byssolite, Clinozoisite, Prehnite, Calcite, Pyrite, Smoky Quartz, Axinite, Titanite, and rarely Apatite.  The quarry is now flooded and no longer used.  These are the best by far of about five hundred specimens.  Other specimens are available from prices of $7 to $45.  Some of these may be listed on a future page.       February 2006 

The following write up on the Mineral Record website (www.minrec.org)  "Whats New in the Mineral World" by Thomas Moore:

 

 

39199      $100
5.2 x 4 x 3.5 cm
39185      $75
4 x 3.5 cm
39186      $40
3.5 x 3 cm
 

 

39187      $75
5 x 3.5 cm
39188      $40
3 x 2.5 cm
 
39189      $75
5 x 4 x 3 cm
 

 

39190      $75
7 x 4 cm
39191      $100
5 x 4 cm
 
39192      $150
4.5 x 2.5 cm
 

 


5hlkm22 CLINOZOISITE, BYSSOLITE, ANDULARIA - $600
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
9 x 7 x 5 cm  ok

 

 


5hlkm23 ANDULARIA, BYSSOLITE - $400
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
4 x 3.5 x 2 cm

 

 

 


5hlkm24 ANDULARIA, BYSSOLITE - $50
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
16 x 9 x 4 mm

 

 

  


5hlkm25 SAGENATED QUARTZ, BYSSOLITE, GOETHITE pseudo after PYRITE - $350
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
8 x 6 x 6 cm


 

 


5hlkm26 BYSOLLITE included SAGENATED QUARTZ, BYSSOLITE - $600
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
7.5 x 4.5 x 4 cm

 

 

 


5hlkm27 PREHNITE, BYSSOLITE - $100
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
3 x 3 x 2.5 cm



 

 

 

 


5hlkm28 ANDULARIA, BYSSOLITE, GOETHITE - $150
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
8.5 x 5 x 5 cm

 

 

 


5hlkm29 PREHNITE, BYSSOLITE, CLINOZOISITE - $150
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
6.5 x 4.5 x 3.5 cm

 

 

 


5hlkm30 PREHNITE, BYSSOLITE - $50
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
23 x 14 x 13 mm

 

 

 


5hlkm31 ADULARIA, CLINOZOISITE, BYSSOLITE - $750
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
16 x 13.5 x 6 cm

 

 

 


5hlkm32 ANDULARIA, BYSSOLITE - $200
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
4.5 x 2.5 x 2.5 cm

 

 

This is an excellent miniature specimen from Cornog.  As far as damage: The major Andularia are undamaged.  The Upper photo right side was attached to more material.  I don't know if you want to call that damage or not.  All is very minor on the overall condition is excellent.  Display is excellent with no distraction from the minor areas I have mentioned.  Hairlike Byssolite present.

 


5hlkm33 BYSSOLITE, CLINOZOISITE - $100
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
5 x 5 x 3 cm

 

 

 


5hlkm34 PREHNITE, CLINOZOISITE, BYSSOLITE - $250
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
9 x 6.5 x 4.5 cm

 

 

 

 


5hlkm35 ADULARIA, BYSSOLITE - $100
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
18 x 18 x 26 mm

 

 

 


5hlkm36 ANDULARIA, CLINOZOISITE, BYSSOLITE, PREHNITE - $150  SOLD
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
4.5 x 4 x 3 cm

 

 

This is an excellent specimen from Cornog.  As far as damage: On the small right photo the little white spot is a damaged Andularia on the edge.  Also on the large photo, the right corner of the vug filled with Andularia crystals apperars to have a tip missing. I guess that's it.  All is very minor on the overall condition is excellent and probably as good as they get.  Display is excellent with no distraction from the minor areas I have mentioned.  Some hairlike Byssolite present.

 


5hlkm37 BYSSOLITE, CLINOZOISITE - $100
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
7 x 5 x 4 cm

 

 

 


5hlkm38 BYSOLLITE included SAGENATED QUARTZ, BYSSOLITE - $75
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
3.5 x 3 x 2.5 cm

 

 

 


5hlkm39 CLINOZOISITE, GOETHITE pseudomorph after PYRITE - $75
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
5.5 x .8 x .6 cm

 

 

 


5hlkm40 ANDULARIA, CLINOZOISITE, BYSSOLITE - $200
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
7.5 x 3.5 x 2.5 cm

 

 

 


5hlkm41 BYSSOLITE included CALCITE - $75
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
4.5 x 3 x .7 cm

 

 

 


5hlkm42 BYSSOLITE, CLINOZOISITE - $75
Keystone Trap Rock Quarry, Cornog, Chester County, Pennsylvania
4 x 2.5 x 1.5 cm

 

 

 


 
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 Jim@LEHIGHMINERALS.com