bb: Baryte - Bright FL Crystal w/ Calcite from Classic S. Dakota Locality

Description

NOTE:
Postal delays caused by the pandemic are affecting
delivery of parcels. In the USA, most delays are minimal. Shipping to other countries is currently taking at least several days to a week or more longer than usual. Please keep this in mind while bidding.
Species:
Baryte, Calcite
Locality:
Elk Creek, Meade Co., South Dakota
Size:
Cabinet - 6.8 x 5.2 x 5.2 cm; 4.5 cm crystal
Weight:
211 g
Number:
2491
Details:
Here's a sharp specimen from a gold star locality for baryte in South Dakota. The single crystal is clear and has a high luster, beautiful as it rests on a bed of botryoidal yellow calcite. The interior is highly transparent, with a maple syrup color. Mineral collectors prize this baryte for its beauty in daylight and for its strong fluorescence: creamy white under longwave UV and pale yellow under shortwave, with yellow to greenish phosphorescence. This classic material comes from concretions in the Pierre Shale of western South Dakota, a sedimentary formation also renowned for fabulous fossils, especially ammonite and baculite shells. This piece was found recently by Collector's Edge, the same outfit that mines the Sweet Home rhodochrosite.
NOTE: TO VIEW FLUORESCENCE, YOU NEED A QUALITY ULTRAVIOLET LIGHT WITH A UV FILTER!
The better the UV source, the better fluorescent minerals look. Cheap "UV" flashlights without filters will not provide satisfactory results!
The photos here are taken using Convoy S2 and C8 (longwave-365)
and UV Systems SuperBright II (shortwave-254) lamps, metered
and exposed to show fluorescent response to best advantage.
Key factors include lamp wattage, UV spectrum and filtration, as well as distance from lamp to specimen. For best results with any UV source, observe against a dark, non-fluorescent, non-reflective background, in complete darkness with eyes adapted. For extended viewing, use protective UV-absorbing goggles.
° ° ° ° °  PLEASE READ BEFORE BIDDING  ° ° ° ° °
* For combined shipping of Auction Items, send a message! I will hold auction items up to 2 weeks.
Please WAIT for invoice before paying. Once paid, I must ship quickly or my rating suffers.
* For combined shipping of Buy It Now items, please Add items to Cart and Request Total for a quote.
* Payment is due within 7 days of invoice unless other arrangements are made. PayPal is preferred.
* Send a message for details, especially for shipments outside the USA.
INTERNATIONAL CUSTOMERS:
* US Post Office policy can make economical shipping a challenge. Price increments for packages are as follows:
First class up to 225 g, then 225-900 g, then 900-1350 g (Canada only).
Higher weights require Priority Mail.
I always try to make shipping as cost-effective as possible. Please send a message so we can work things out.
* Please note that import duties, taxes or charges are not included in the item price or shipping fees and are the
buyer’s
responsibility.
While most countries do not charge duty on mineral specimens, you should check in
your own co
untry to be sure before bidding.