Rock On
earthstory:

Petrified Forest National Park. Petrified Forest National Park in Arizona, United States, is named for and is famous for the abundant fossilised wood (Triassic in age) that can be found in the area. As well as the famous fallen trees,other fossils found in the area include Late Triassic ferns, cycads, ginkgoes, and fauna including phytosaurs, large amphibians, and early dinosaurs. The sediments and fossils that make up the National Park were laid down during the Late Triassic period, approximately 225 million years ago, and the area was situated on the edge of the Super-Continent Pangaea. The climate was humid and tropical-sub tropical (as evidenced by the fossil types found in the area). So how were these famous trees fossilised? Periodically the trees were covered in flood deposists containing a large amount of volcanic ash. Overtime Groundwater dissolved silica from the volcanic ash and deposited it as quartz, replacing the organic matter of the trees. Traces of Fe-Oxide in the sediments created the beautiful colours that can be seen today. -LL Links for more information;http://www.nps.gov/pefo/index.htmhttp://www.petrified.forest.national-park.com/http://3dparks.wr.usgs.gov/pefo/index.html Photo;http://bit.ly/PbPli3

earthstory:

Petrified Forest National Park.

Petrified Forest National Park in Arizona, United States, is named for and is famous for the abundant fossilised wood (Triassic in age) that can be found in the area. As well as the famous fallen trees,other fossils found in the area include Late Triassic ferns, cycads, ginkgoes, and fauna including phytosaurs, large amphibians, and early dinosaurs.

The sediments and fossils that make up the National Park were laid down during the Late Triassic period, approximately 225 million years ago, and the area was situated on the edge of the Super-Continent Pangaea. The climate was humid and tropical-sub tropical (as evidenced by the fossil types found in the area).

So how were these famous trees fossilised?
Periodically the trees were covered in flood deposists containing a large amount of volcanic ash. Overtime Groundwater dissolved silica from the volcanic ash and deposited it as quartz, replacing the organic matter of the trees. Traces of Fe-Oxide in the sediments created the beautiful colours that can be seen today.


-LL
Links for more information;
http://www.nps.gov/pefo/index.htm
http://www.petrified.forest.national-park.com/
http://3dparks.wr.usgs.gov/pefo/index.html

Photo;http://bit.ly/PbPli3

Cosmoceras Ammonite from the Volga River Formation in Russia. Dates back to the Mesozoic Era (specifically the upper Jurassic period), so about 145-160 million years ago. Fact of the day! The iridescence is caused by aragonite which replaced the shell as it fossilized. 

If I can get it to work right, I’ll have a video up of the colour play in the future. 

Gerastos Trilobite from the Hamar Laghdad Formation near Alnif, Morocco. This little fellow is from the Devonian Period, around 400 million years ago. It’s itty-bitty, but I chose it for the amount of character in it. Looks like it’s still alive and ready to crawl off its limestone matrix.

Just got a couple of fossils I ordered two weeks ago! An adorable trilobite (about the size of my pinky nail, but incredibly detailed), and a gorgeous ammonite. Queuing them up right this second! 

bekkathyst:

~BEKKATHYST’S SPRING 2014 GIVEAWAY~

Once again, I have a giveaway for all you lovlies. This giveaway is smaller than the last ones I’ve had, but it’s by far the most valuable. All these stones are 100% natural gemstones. They’re part of my personal collection, and I just think it’s time for them to find a new home.. I’ve realized I’ve become far too attached to my stones as material possessions, so this is helping me to let go, while at the same time bringing joy to another person. These are all the stones included (from left to right in the first picture):

  • Polished lepidolite chunk
  • Green tourmaline crystal
  • Tumbled reverse watermelon tourmaline slice
  • Rough aquamarine crystal
  • Polished opal
  • Double terminated quartz crystal with black cloudy inclusions
  • Polished fire agate
  • Something from my shop of your choosing that is under $25

All I ask is that you respect me, my business, and these rules:

  • You can reblog this post as many times as you’d like, but please don’t spam.
  • Please follow my blog so you keep track of updates on the giveaway.
  • I run an Etsy shop that has handcrafted jewelry made from all natural gemstones that focuses on crystal healing. If you have an Etsy account, I’d appreciate it if you liked my my shop. If you don’t have an Etsy account, don’t worry about it.
  • Please do not use side blogs or giveaway blogs. I must be able to see that you are following me when the winner is chosen.
  • The winner will be chosen via a random number generator. 
  • This is international
  • Entries will be closed May 2nd at 11:59 pm PST, and the winner will be announced shortly after that
  • The winner will have 24 hours to respond with their full name and address- if they do not, a different winner will be selected
  • If you are underage, please make sure it is okay with your parents that you are giving out your address
  • Please do not tag this post as “giveaway” when you reblog it. That will increase the chances of the notes messing up on this post.
  • Please, be respectful of me and my rules. If you break any of these rules, you will be disqualified. 

I hope this brings some more attention to my shop, and I hope that these stones go to someone who is lovely and just as appreciative of their beauty as I have been. I really hope they go to a lovely new home. Thank you for participating! I hope you enjoy. Good luck! 

Beautiful specimens! Good luck to everyone!

Is there any way to manage my queue in such a way that it’ll only post every couple of days rather than every day? I feel like it’d be better that way since my collection doesn’t grow fast enough to keep a steady stream, and that way I wouldn’t have to post in such quick bursts.

In the meantime, my ask box is open, so you can go ahead and ask me anything. Doesn’t necessarily have to be about minerals or my collection, I’ll do my best to answer it.

ggeology:

Zoned Agate

Topaz crystal thumbnails from Thomas Range, Utah. These came as extras with the dioptase! Mineral vendors take note, I will come back to you if you give me freebies, especially freebies as beautiful as these. The pictures don’t do the sherry-colour justice.

Dioptase. The location is a bit disputed. The original vendor claims it’s from Tsumeb, Namibia, but the person I bought it from seems to think it was more likely from Altyn Tube, Kazakhstan. Either way, I love it to death. It shifts from deep, emerald greens to the beautiful teals you see in the photos in the light.

mineralists:

Beautiful Labradorite Crystal Lion Head!

Amazing!