Gadolinite, Thorogummite, Behoite, Microcline

Locality: Petrick pegmatite, Kingsland Granite Company quarry (Petrick quarry), Llano Co., Texas, USA

2.5 cm partial crystal of weathered gadolinite on microcline self-collected in August of 2005 from the Petrick Pegmatite in Llano County, Texas. Also visible in this specimen are dark brick-red patches of thorogummite on the matrix beneath the left side of the crystal and a pinkish-white encrustation of behoite (beryllium hydroxide) beneath the right side.

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Photo added: 31st Jan 2007

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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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