Ankerite-Dolomite Series

Locality: Phoenixville, Schuylkill Township, Chester Co., Pennsylvania, USA

Note: The mineral species Ankerite-Dolomite Series is not listed in our database for this locality. This specimen may be misidentified or the mindat list of minerals at this locality may be incomplete.

Pale crystals on rock matrix, noted as a Dolomite/Ankerite series specimen, with ferrous surfaces nearer the edges. Specimen collected in the region of Phoenixville, Chester Co., Pennsylvania. The I.D. of Ankerite in the region was dismissed as doubtful by Arthur Montgomery and removed from the list of approved species in Pennsylvania, however Ankerite was again reconfirmed by Heyl in a 1984 USGS study by XRD, specifically from specimens collected at the Wheatley Mine. The I.D. of Ankerite for these occurrences is entrenched in literature and is represented in most collection as such. Because chemical analysis or RXD is required to positively differentiate between the two species, the use of Ankerite as an I.D. for specimens from these occurrences will likely remain for practical/historical purposes. Specimen size: 5 x 3.5cm. From the PA Annex of my personal collection, acquired in 2005.

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Photo added: 27th Jun 2006

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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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