Topaz, Margarite, Margarodite

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Locality: Old Mine Park (Lane’s Mine of Trumbull; Hubbard Mine; Long Hill Mine; Old Tungsten Mine), Trumbull, Fairfield Co., Connecticut, USA

Representative assembly of minerals associated with hydrothermal veins in the Old Mine Park area. The specimen was collected in the park and prepared using a diamond lapidary saw to expose the interior, which consists of yellowish massive topaz, grayish margarite, and gray-green margarodite assumedly replacing topaz. The rocks contained in the particular vein this sample was collected from are notably rich in strontium with respect to material collected in similar environments within the area. I recently did a small project for a geochemistry course I took investigating the heavy element composition of these unique hydrothermal rocks using a Rigaku XRF Spectrometer. Personally collected specimen.

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Photo added: 7th May 2009

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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