First stop was theRogerley Mine- the UK‘s only commercially run mineral specimen mine which is operated by Cal Graeber and Jesse Fisher ofhttp://www.ukminingventures.com.[Link Broken? Jun 2012] They have been mining it since 1999 yet it has taken me ten years to drive the 5 hour journey up to the north of England to actually visit the mine operation.Let me make it clear right away. Rogerley is a working specimen mine. As such they don‘t normall..

Collecting at the Lincoln (Nelson Aggregates) Quarry, Beamsville OntarioBy: Michal Adamowicz, rockhoundHail all. Here is a short account of my collecting adventure at the Lincoln Quarry outside of Beamsville, Ontario. This was a unique trip for me as it was my first large scale operational quarry that I have ever visited. Most of the sites I visit are overgrown, & abandoned small mines. This was quite a change.First of all the quarry unfortunatel..

Collecting at the Canal Dump (Montrose Occurrence) Niagara FallsBy: Michal Adamowicz, rockhoundHail all. Here is an article regarding a great collecting site that soon will be gone.The Montrose Occurrence (also known as the canal dump) is an excellent collecting site for people of all ages as it is very easily accessible. This site is also located within an hours drive to multiple major cities in Southern Ontario, Canada: GTA, St. Catherines,& Ha..

I have updated this article with a more thorough description of the geological environment, some photos of the quarry, and I have added a description and a few photos of the prehnite found here. The plan is to gradually extend the article to contain all the minerals that I know from this location.The Ravneberget quarry is located in the Bamble sector, one of many orogene belts on the Precambrian Baltic shields. The onshore part of the Bamble sect..

As of 1975 ore reserves were proven & probable at 1,023,086 tons averaging 2.9 pounds U3O8 per ton, plus inferred 1,600,000 tons averaging 1.85 pounds U3O8 per ton.The geology here is made up of extremely irregular bodies of sheared granite pegmatite, pegmatitic granite, & syenitic pegmatite occupying an area approximately 1800 meters long by 150 meters wide. The pegmatite conformably intrudes metagabbro, amphibolite, amphibole gneiss, biotite gn..

This is the sixth installment in a series of articles detailing my recent rock-collecting trip. You may want to read my articles #’s 1-5, and start at the beginning of the story. The story begins in Pittsburgh, Pa, takes you to and through North Carolina ending in Arkansas. We traveled over three thousand miles in a two-week period in August of 2011.According to Google Maps, it is over 700 miles and a 12-hour drive from where we were stayin..

Using as references, Molybdenum Deposits of Ontario by F. J. Johnson, 1968, Mineral Occurrences in the Haliburton Area by J. Satterly, 1943, Annual Report Volume dated 1918 of the Ontario Dept. of Mines, Sabina’s Rocks and Minerals, Report 39, and my own personal story, I would like to offer you, the reader, a little incite into molybdenum and three of many mines that produced some of the ore in Monmouth Township, Haliburton County. This ar..

A view of the quarryAbout 200 million years ago the region where today is located the beautiful fishing village of Sesimbra was invaded by sea arms originating large lagoons. The rapid evaporation of the water in this hot and dry environment has led to the accumulation of salts in the bottom of these lagoons; in this case the salt was gypsum.Gesseira de Santanais the unique occurrence in the municipality of Sesimbra representative of this remote ..

“Why are those Wulfenites so extraordinary expensive?“ This thought accompanied me for several years whenever I tried to get a good specimen from Stefanie Mine at Bleiberg. I just could not understand that for the price of one Wulfenite you would be able to buy probably 10 good specimens from any other place. After 5 years of living at Bleiberg there was not even one Wulfenite crystal in my collection. At this time I got to know Herbert Stichau..