Colorado Jasper Options

[CP]

Historically Colorado jasper was used exstensively by the native american indians as knapping material.
Found in a wide variety of colors around the state.

Recent finds from Park county Colorado
Nice piece with vibrant color!


Red and yellow pieces.

[CP]

Hi GB and welcome, make yourself right at home in the forums. We are all very glad to have you aboard.
Firstly, I can not be held responsible for the worsening "rock fever" you will be enduring from now on.
All I can say is, start collecting up buckets now, you'll need a head start.

Q's will keep coming up too and we all love em', keep em' coming.
We have a thread going that has some great info on the cherts and flints in the quartz sub varieties. That thread is titled "Mineral Id'ing" in the prospectors discussions section.
Basically chert and flint are both rocks (not minerals) and they are catagorized in the quartz family sub varieties. Flint is described as granular cryptocrystalline variety of quartz and chert also a cryptocrystalline variety.
There are both found in similar situations to form but slightly different environments (still trying to figure that part out myself) sedimentary formations such as limestone, chalk, and rhyolites can host them. Both chert and flint are opaque too where as chalcedonys and agates will be translucent.

Flint is generally viewed as darker colored and chert being lighter in color.....usually, but not always. Chert also is known to have alot of fossils from algea, bacteria and micro organisms.

Now, jasper also being a sub of quartz is described as a dense, opaque, microcrystalline variety of quartz, usually red, brown or yellow.

Whew, there is alot of info on these. You can check out more on this from Mindat's quartz page, scroll down to varieties to find links to jasper, chert, and flint. Awesome database Mindat has, just great for learning the details of stuff like this.

Lets see some pics of all the cool stuff soon too.
Hope we didn't make the "rock fever" too much worse today.


CP

[Gold_Barnstormer]

Hi GB and welcome, make yourself right at home in the forums. We are all very glad to have you aboard.
Firstly, I can not be held responsible for the worsening "rock fever" you will be enduring from now on.
All I can say is, start collecting up buckets now, you'll need a head start.

Q's will keep coming up too and we all love em', keep em' coming.
We have a thread going that has some great info on the cherts and flints in the quartz sub varieties. That thread is titled "Mineral Id'ing" in the prospectors discussions section.
Basically chert and flint are both rocks (not minerals) and they are catagorized in the quartz family sub varieties. Flint is described as granular cryptocrystalline variety of quartz and chert also a cryptocrystalline variety.
There are both found in similar situations to form but slightly different environments (still trying to figure that part out myself) sedimentary formations such as limestone, chalk, and rhyolites can host them. Both chert and flint are opaque too where as chalcedonys and agates will be translucent.

Chert generally veiwed as darker colored and flint being lighter in color.....usually, but not always. Chert also is known to have alot of fossils from algea, bacteria and micro organisms.

Now, jasper also being a sub of quartz is described as a dense, opaque, microcrystalline variety of quartz, usually red, brown or yellow.

Whew, there is alot of info on these. You can check out more on this from Mindat's quartz page, scroll down to varieties to find links to jasper, chert, and flint. Awesome database Mindat has, just great for learning the details of stuff like this.

Lets see some pics of all the cool stuff soon too.
Hope we didn't make the "rock fever" too much worse today.


CP

Here are some specimens I found in my neck of the woods......Jasper?
G_B

[Gold_Barnstormer]

Here are some specimens I found in my neck of the woods......Jasper?
G_B

Not the best pic...These cabs are from the red,yellow,black(actually green) jasper from this earlier pic. The middle cab is ground and polished 3 dimensionally, although it's not perfectly round. Measures just shy of 2" long x .75" x .5" thick. All stones done by hand, no dop stick. I can't thank you enuff with your help in getting me started. I cannot and will not stop.