Serpentine Rock - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 06-29-2007, 07:33 PM Thread Starter
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Serpentine Rock

I came across some green rocks that might look good in a nano tank I am in the process of building. If I have identified it correctly it is serpentine. Has anyone tried serpentine in a freshwater aquarium before? Trying to figure out what it is I have come across numerous possible compositions and I really can't tell which variety of it I have. For all I know the white streaks could be asbestos.

I am hoping someone might have some insight into this rock, so I don't have to go through the "put it in a bucket of water and watch the water parameters" routine.

If it's not OK for aquarium use the trip wasn't a total loss, I did find some granite that will look nice as well.
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post #2 of 5 (permalink) Old 06-29-2007, 07:56 PM
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is it serpentinite? if it is it should be ok. be sure to check with acid first, and possibly even do a copper or other heavy metal test a few weeks into setup, especially if you plan to use co2.


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post #3 of 5 (permalink) Old 06-29-2007, 07:59 PM
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Maybe a pic would help as lots of rocks are green
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post #4 of 5 (permalink) Old 06-30-2007, 03:48 AM Thread Starter
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As requested here are pictures






The rocks are wet to show their colors. When dry they turn a dusty green and it is very hard to distinguish their features. Each rock is about the size of my fist. I have a couple others but these pictures are a good sampling. The grain ranges in size from probably medium to fine. Where there are large areas of green they feel almost like wax. The white/brown areas feel almost like granite.

I found all of these on a beach near Pt. Townsend, WA.
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post #5 of 5 (permalink) Old 02-20-2014, 07:01 PM
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If it's waxy, it's serpentine. The white is probably quartz or, as you said, granite. I believe asbestos is retrieved through a heating process. Also, serpentine is the most common marker for mercury deposits. Amount present, if any, should be miniscule. I have a large chunk in my turtle tank, but mostly above water. I'm iffy about putting more in as substrate, as well.
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