IMPORTANT INFORMATION REGARDING RADIOACTIVE MINERAL SPECIMENS ! !
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URANINITE
Swamp Quarry #1, Topsham, Sagadahoc County, MaineTopsham,
Maine is well known as one of the best localities, worldwide, for crystallized Uraninite.  A short description of the Uraninite occurrence from this locality is featured on P. 361 of “Mineralogy of Maine”, Volume I, Descriptive Mineralogy, V. King  and E. Foord, 1994.  Specimens featured here are all sharply formed crystal groups with lustrous black faces, and no matrix.   Matrix specimens are very rare.  The Swamp Quarry #1 is reported to be a water-filled pit as of 1994.  These specimens were collected before 1990 (not recently collected).  Note that the gram weights are given only as a measure of size.  These specimens are not sold by the gram.

THORITE Var. Uranothorite
Rosa No. 1 Trench, Mount Rosa, El Paso County, Colorado
From the Eugene B. Gross collection, the specimens below were collected sometime in the late 1950’s to early 1960’s. Uranothorite is present in brick red color, massive form.  This occurrence is listed in “Minerals of Colorado”, E. Eckel and the Friends of Mineralogy, 1997, P. 483.  Possible associated minerals include Thorogummite, Uraniferous Opal, Uranophane, and Hematite, also in massive form.  Radioactive!  The gram weights are given only as a measure of size – specimens are not sold by the gram.  Uranothorite is: (ThU)SiO₄

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NEW TITLE

“JACHYMOV”,  JOURNAL OF THE CZECH GEOLOGICAL SOCIETY, Edited by Dr. Stanislav Vrana, 11 5/8” X 8 1/4”,  in English, 230 pages, with numerous black & white, as well as color photos, crystal drawings, and SEM’s of the minerals, soft cover.  Your first question is probably…  why would we recommend a book covering such an obscure locality in Czechoslovakia??  Well, read on!  “Jachymov” is the result of years of hard scientific work, and it is the most comprehensive publication about the mines and minerals of the Jachymov Silver and Uranium district ever written.  Jachymov (known as Joachimsthal in old literature) gained world renown through important achievements and discoveries associated with mining and scientific activities during five centuries of exploitation of the ore deposits.  Most recently, the mines at Jachymov were the key producers of the uranium-bearing minerals used by the Russians during the cold war arms race with the USA.  On an historical note, for a part of the 16^th century, Jachymov ranked as the largest Silver producer in the world.  It was the Uraninite from Jachymov on which Maria Sklodowska (Madam Curie) first isolated and discovered two new elements – Polonium and Radium – in 1898.  More than 380 minerals have been identified from Jachymov to date, and the current studies will eventually bring this number up to over 400!  This in-depth report covers the geology of the Jachymov ore district, followed by 137 pages of mineral descriptions with many more than 100 color photos, SEM’s, and crystal drawings.   The next chapter covers the ore-forming processes and mineral parageneses of the Jachymov district.  The chapter on “Who was who in Jachymov mineralogy” presents historical information concerning the discovery of primary minerals first described from Jachymov.  The biographic information about important people after whom the minerals were named goes back to the 17^th century, and includes photographs or portraits of most of these important people. The final chapter covers the history of discovery and study of new primary minerals, and includes photographs of two old labels from mineral specimens recovered in the 1800’s, now in the National Museum of Prague.  Published by the Czech Geological Society, 2003, Prague, Czech Republic.

Shipping weight:  3 pounds
Order Item BK0353
Price:  $125.00