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Gummite With Uraninite & Autunite

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RAR1160935

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Description
Locality: 
Ruggles Mine, Grafton, Grafton County, New Hampshire, United States of America
Class: 
Cut Stone
Size Range: 
Cabinet (10-18 cm)
Size: 
14.5 × 10.8 × 0.8 cm
Weight: 
272.00gr
Description

Gummite is not a single mineral but a mixture of secondary uranium minerals formed from the alteration of uraninite. At the Ruggles Mine in New Hampshire, gummite typically consists of:
​Uranophane (Yellow)
​Soddyite (Yellow/Green)
​Fourmarierite (Orange/Red)
​Kasolite (Orange/Brown)
​Curite (Orange/Red)
​Becquerelite (Yellow/Amber)
​These minerals often form colorful "boils" or rings around a core of black uraninite. Because it contains high concentrations of uranium, gummite is radioactive and should be handled with care.

This specimen comes from the largest piece of Ruggles Mine material that I have been able to source. I wanted to offer some special American Uranium minerals for Erocks 20th anniversary and we simply cannot discuss US Uranium without such classic material. World-class specimen suitable for high quality mineral displays or Museum level showcase.

Radioactivity Level: >+500,000 counts per minute drect on center with a Radiacode 110

Mineral Data
What's on the rock

Uraninite

Formula: 
UO2
Strunz: 
4.DL.05
Crystal System: 
Isometric
Hardness: 
5.0 - 6.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Autunite

Formula: 
Ca(UO2)2(PO4)2·11H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Type Locality: 
Saint-Symphorien-de-Marmagne, Montcenis, Saône-et-Loire, Burgundy, France

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Start 25 Jan 18:00
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Shipping Information

Postage Area Price
USA Shipping, Handling, Packaging
$10
Worldwide Shipping, Handling, Packaging
$25

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Research proper handling of radioactive minerals prior to ordering. Common courtesy would imply that one inform roommates, parents, landlord, etc. of such material being present in the home. Accidents do happen during shipping. For extra delicate and expensive specimens, we sometimes provide and recommend the option for an increased insurance level on the shipping whenever possible in order to cover any damages. Extra insurance is available upon request and must be expressed upon the payment of the invoice. We do not accept returns. Be certain you want the specimen you are bidding on. We take as many pictures as possible and include accurate measurements, weight, and descriptions. Pay attention to the description. We are a very small family business so we simply cannot absorb the loss of time and money that it takes to process a return. If something breaks during shipment, it is the buyers responsibility to file a claim with the shipping company. We take pictures of everything we send and the condition it is in. If a specimen arrives broken, take many pictures and have proof of the amount paid to seek reimbursement from shipping company. International is not covered by insurance unless by request. If there is a question regarding these policies or about a mineral sample, we are open to all communication and will usually respond within 24 hours whenever possible. Readings for Radioactive Minerals are taken with a scintillator device. Radiacode 103 scintillator device is placed on the specimen to read the highest area of activity. This reading can vary greatly with other instruments. Cheap Geiger counters will read significantly less. UV minerals are pictured with a 365 nm UV light. Regular 295 nm black lights may not cause the same glowing reaction. Standard pictures are under natural or white led lights.

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