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Found 5 results

  1. 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

  2. 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

  3. 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

  4. 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

  5. From the album: Fossil Amber and Copal: Worldwide Localities

    3.0g of amber from the 9.2g lot depicted in the associated entry. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary of the upper Tukwila/lower Renton Formations. It is found in association with Pinus sp. and Metasequoia occidentalis remains, which were the most probable sources of the amber; association with Metasequoia sp. is even more prevalent among the amber from the Blakeburn Mine (i.e., amber from the Allenby Fm. near Coalmont), as Metasequoia imprints are especially abundant at that site.

    © Kaegen Lau

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