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Found 16 results

  1. Barrelcactusaddict
    VIDEO: Chiapas Amber (La Quinta Fm./Mazantic Shale, 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Rough): Weight: 11.8g Dimensions: 33x31x17mm Lighting: 140lm LED Longwave UV (365nm) About the Specimen: A thick, red oxidized layer was formed over millions of years through oxidation during the amber's burial. The blue-green fluorescence is due to exposure of the amber's hydrocarbons to UV wavelengths in the LED light. There are numerous fossil barnacles and barnacle scars, coating the exterior of the specimen. History: The amber of Chiapas has a history

    © Kaegen Lau

  2. Barrelcactusaddict
    Chiapas Amber (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Polished): Weight: 11.4g Dimensions: 30x31x17mm Lighting: 140lm LED About the Specimen: This is the same specimen from other entries, but with polished faces that were once broken. The thick, red oxidized layer was formed over millions of years through oxidation during the amber's burial. The blue and blue-green fluorescence is due to exposure of the amber's hydrocarbons to UV waveleng

    © Kaegen Lau

  3. Barrelcactusaddict
    Chiapas Amber (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Polished): Weight: 11.4g Dimensions: 30x31x17mm Lighting: 140lm LED About the Specimen: This is the same specimen from other entries, but with polished faces that were once broken. The thick, red oxidized layer was formed over millions of years through oxidation during the amber's burial. The blue and blue-green fluorescence is due to exposure of the amber's hydrocarbons to UV waveleng

    © Kaegen Lau

  4. Barrelcactusaddict
    Chiapas Amber (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Polished): Weight: 11.4g Dimensions: 30x31x17mm Lighting: 140lm LED About the Specimen: This is the same specimen from other entries, but with polished faces that were once broken. The thick, red oxidized layer was formed over millions of years through oxidation during the amber's burial. The blue and blue-green fluorescence is due to exposure of the amber's hydrocarbons to UV waveleng

    © Kaegen Lau

  5. Barrelcactusaddict
    Chiapas Amber (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Polished): Weight: 11.4g Dimensions: 30x31x17mm Lighting: Longwave UV (365nm) About the Specimen: This is the same specimen from other entries, but with polished faces that were once broken. Numerous flow lines are seen in a radiating "Y" pattern on the bottom-left section of the specimen: the spaces between the lines represent individual resin layers that were produced in succession b

    © Kaegen Lau

  6. Barrelcactusaddict
    Chiapas Amber (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Polished): Weight: 11.4g Dimensions: 30x31x17mm Lighting: 140lm LED About the Specimen: This is the same specimen from other entries, but with polished faces that were once broken. The thick, red oxidized layer was formed over millions of years through oxidation during the amber's burial. Transmitted light (LED) from the rear of the specimen displays the depth of the color of the oxidi

    © Kaegen Lau

  7. Barrelcactusaddict
    Chiapas Amber (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Polished): Weight: 11.4g Dimensions: 30x31x17mm Lighting: 140lm LED About the Specimen: This is the same specimen from other entries, but with polished faces that were once broken. The thick, red oxidized layer was formed over millions of years through oxidation during the amber's burial. The blue and blue-green fluorescence is due to exposure of the amber's hydrocarbons to UV waveleng

    © Kaegen Lau

  8. Barrelcactusaddict
    Chiapas Amber w/ Fossil Barnacles (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Rough): Weight: 11.8g Dimensions: 33x31x17mm Lighting: Longwave UV (365nm) About the Specimen: There are numerous fossil barnacles and barnacle scars, coating the exterior of the specimen. History: The amber of Chiapas has a history of use that dates back to the age of the Maya Empire; amber was traded between different tribes, and sometimes sent as an annual tri

    © Kaegen Lau

  9. Barrelcactusaddict
    Chiapas Amber w/ Fossil Barnacles (La Quinta Fm./Mazantic Shale [Simojovel Group], 22.8-15 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Chiapas Amber Simojovel, Chiapas, Mexico La Quinta Fm./Mazantic Shale (Simojovel Group) 22.8-15 Ma Specimen (Rough): Weight: 11.8g Dimensions: 33x31x17mm Lighting: 140lm LED About the Specimen: There are numerous fossil barnacles and barnacle scars, coating the exterior of the specimen. History: The amber of Chiapas has a history of use that dates back to the age of the Maya Empire; amber was traded between different tribes, and sometimes sent as an annual tribute to ot

    © Kaegen Lau

  10. Barrelcactusaddict
    Tiger Mountain Amber (Tukwila Fm./Renton Fm. [Boundary], Middle to Late Eocene)

    From the album: Fossil Amber and Copal: Worldwide Localities

    - Subjects: Three exceptional specimens of amber, recovered from exposures on Tiger Mountain, Washington State; this is the second of two videos detailing the specimens' natural fluorescent and phosphorescent responses: longwave UV light (Convoy S2 flashlight) was used in this entry. All were prepared by hand using a diamond needle file, 240 to 3,000 grit SiC sandpaper, and chromium oxide (ZAM compound) on a Selvyt microfiber cloth. - Amber's Source Formations and Age: The amber-bearing coal contained within the the Tiger Mountain, Tukwila, and Renton Formations spans a geologic times

    © Kaegen Lau

  11. Barrelcactusaddict
    http://www.thefossilforum.com/index.php?/gallery/image/55506-tiger-mountain-amber-tukwila-fmrenton-fm-boundary-middle-to-late-eocene/Tiger Mountain Amber (Tukwila Fm./Renton Fm. [Boundary], Middle to Late Eocene)

    From the album: Fossil Amber and Copal: Worldwide Localities

    - Subjects: Three exceptional specimens of amber, recovered from exposures on Tiger Mountain, Washington State; this is the first of two videos detailing the specimens' natural fluorescent and phosphorescent responses: 140 lumen LED light (yellow phosphor) was used in this entry. All were prepared by hand using a diamond needle file, 240 to 3,000 grit SiC sandpaper, and chromium oxide (ZAM compound) on a Selvyt microfiber cloth. - Brief Description of Deposit: Tiger Mountain amber occurs in lignitic coal seams, mainly contained within two Geologic Formations, namely the Tukwila and Renton

    © Kaegen Lau

  12. Barrelcactusaddict
    Tiger Mountain Amber (Upper-Tukwila/Lower-Renton Formations [Boundary], Middle to Late Eocene)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Incredible blue fluorescence in amber from Tiger Mountain, Washington State, U.S.A. No longwave UV light has been used here; these select pieces fluoresce in the same LED light conditions as Dominican blue amber, and with a strikingly similar coloration. Commercial quantities of blue amber have been officially described to be found in the Dominican Republic, Indonesia, and Mexico (Chiapas); to my knowledge, blue amber has never been described, much less documented, from North American deposits. Total weight is 0.4g, each piece measuring only a few millimeters in length. In the fluorescent vide

    © Kaegen Lau

  13. Barrelcactusaddict
    Tiger Mountain Amber (Upper-Tukwila/Lower-Renton Formations [Boundary], Middle to Late Eocene)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Amber from Tiger Mountain, Washington State, U.S.A. Same subjects in separate video depicting their fluorescence. Total weight is 0.4g, each piece measuring only a few millimeters in length. Subjects: Tiger Mountain Amber (Upper-Tukwila/Lower-Renton Formation [along boundary], Middle to Late Eocene) Lighting: Quantum 140 lumen LED light (yellow phosphor) Recording: Samsung WB35F

    © Kaegen Lau

  14. deadwaterdevourer

    Amber ? Strange Glow

    deadwaterdevourer posted a topic in Fossil ID

    Hi all! First post here, spent some time reading the tips and rules so I hope I got everything right, but if I didn't please let me know. I just got this specimen from a seller in Indonesia, who claimed it was Sumatran blue amber. The 'blue' part is skeptical, though it does seem to fluoresce a bit in direct sunlight. I've run all the amber tests I am capable of doing (the rub-and-smell test, the static test, scratch test, black light test, acetone test) and for all intents and purposes it does seem to be amber, but I noticed last night when I was playing around with th
  15. Scalebar
    I bought a pack of dinosaur bone rubble ( Sauropod allegedly) to make up the min price on a order of rock. Polished up a bit on my flat lap and did a fluorescence scan just on the endogenous fluorescence. Turns out to glow all over the shop and makes a great test slide . The microscope tracks a laser spot across the sample and measures the fluorescence produced at whatever wavelengths you set. The first image is one frame at higher res, the field of view is about 60 microns. but I was testing the frame stitching so the second image is a tiled scan - same res. The original files are 3d too tho
  16. aek
    This was my second time visiting this well-known Late Carboniferous, Kasimovian stage (305-7mya) spot on the NW edge of the Illinois basin. Here are some things I found. Some large brachiopods. After splitting some rocks, came across this nice tooth. I kept both halves for careful extraction/reassembly at home, which took at least a few hours. I don't know much about shark teeth and after researching, and from what I can glean from what scarce information is available, I think it's a Holocephalia subclass, Chimaera tooth. Possibly Cochliodus sp...? It
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