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Jump straight to: May 17 Mineral UpdateNew Mineral Update every Tuesday at noon. |
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MINERAL OF THE WEEK
#81571, Pyrite over Galena, Buick Mine, Bixby, Missouri (SOLD)
News and CommentsEvery week I post a number of mineral specimens that fluoresce under ultraviolet (UV) illumination. Fluorescent minerals, when illuminated with only ultraviolet light (invisible to the human eye) will emit visible light and appear to glow in the dark. I check every specimen for fluorescence using a shortwave ultraviolet lamp, and a longwave ultraviolet lamp. The newest UV lamps are much brighter than the old days. My first was a small 7 watt lamp that used AAA batteries. The UV illumination was very dim. But if I let my eyes adjust to the dark, I could see the fluorescence. These days the lamps are so bright that I jokingly say they are capable of making anything fluoresce. Shortwave UV lamps are relatively expensive because the filter on the front of the lamp is made by only one supplier in Japan. Low wattage shortwave UV lamps may be purchased for about $40, but to really enjoy fluorescent minerals, you should buy a better lamp, with brighter wattage (output) and expect to pay $300 (used) to $600. Look for brands like SuperBright, TripleBright or Way Too Cool. Longwave fluorescent lamps are much less expensive and are the type commonly seen in mall stores selling fluorescent posters. They are less expensive because the filters are not as expensive. I use an inexpensive flashlight-type longwave UV lamp called a "Convoy S2" that are available from dealers of Way Too Cool lamps for around $55. By the way, do not EVER take a UV lamp with you to a hotel or motel. You do do not want to see what fluoresces in them. John Betts, 5/17/2022 Click here to read past news and commentaries...
Customer Feedback:"Hi John, I received the fluorites today! I just wanted to reach out and thank you sooo much for amazing service, quality and price. I was blown away at the Elmwood specimen! Absolutely rich in color and condition is 100! The size of Minerva fluorite is amazing, the condition, color, zoning (which surprised me when backlit) is so nice!! I'm so please to add these to my collection! Thank you so much John!" Jon W. "On 7th December we ordered a Fluorite Crystal from you. It arrived at our address in the UK today, less than one week ago. That is amazing service and the crystal itself is magnificent. Thank you so much" Michele and Stuart Click here to see other comments about this site by customers. Also add your feedback...
Pledge to My Customers:Customer satisfaction is my primary goal. I pledge:
John H. Betts, owner
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