Ben, Em, Diana, and Helen

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Geology

It has been a great week for rocks in the Big Gossan Mine and that has inspired me to get the camera out and take some pictures of the rocks I have brought home.  (I realize now that looking at pictures on Mindat.org everyday has left me feeling unsatisfied with every picture I take.)  I collected most of these rocks, but I also had some help from the geology sampling crew.  Although I do have to yell at them to use their hands to pull out the rocks before they use their hammer.  I actually grabbed the hammer away from Frelthom on Wednesay and threw it across the drift to keep it away from the quartz crystals we were collecting.  It was a little unfair: he was too short to reach the pocket.  I learned the Indonesian word for share and everything was cool.

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Quartz Japan-law twin, 2510 Level, Big Gossan Mine
Quartz Japan-law twin, 2510 Level, Big Gossan Mine
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Calcite (brown) on pyrite and quartz, 2510 Level, Big Gossan Mine
Calcite (brown) on pyrite and quartz, 2510 Level, Big Gossan Mine
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Quartz crystals, 2510 Level, Big Gossan Mine
Quartz crystals, 2510 Level, Big Gossan Mine
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Dolomite after calcite with quartz, Grasberg Ventilation Drift
Dolomite after calcite with quartz, Grasberg Ventilation Drift
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Anhhydrite (purple) with bornite, DOZ Mine
Anhhydrite (purple) with bornite, DOZ Mine
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Quartz, pyrite, and calcite, 3060 Level, Big Gossan Mine
Quartz, pyrite, and calcite, 3060 Level, Big Gossan Mine
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Quartz with pyrite and calcite, with Japan-law twin on the left, 2510 Level, Big Gossan Mine
Quartz with pyrite and calcite, with Japan-law twin on the left, 2510 Level, Big Gossan Mine
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Quartz Christmas Tree with pyrite on top, 2510 Level, Big Gossan Mine
Quartz Christmas Tree with pyrite on top, 2510 Level, Big Gossan Mine
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Two quartz Japan-law twin crystals, 2510 Level, Bigossan Mine - I'm rather proud of this one.
Two quartz Japan-law twin crystals, 2510 Level, Bigossan Mine - I'm rather proud of this one.
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Quartz and chalcopyrite from 201.3 meters down diamond drill hole BGU11-2; this was a gift fro my boss Lasito who was cleaning out his office.
Quartz and chalcopyrite from 201.3 meters down diamond drill hole BGU11-2; this was a gift fro my boss Lasito who was cleaning out his office.
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A quartz Japan-law twin (kembar in Indonesian) on its own - they still have each other though..
A quartz Japan-law twin (kembar in Indonesian) on its own - they still have each other though..

 

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