page_title: Carlfriesite
hierarchical_section_title: Carlfriesite
caption_attribution_description: English: Carlfriesite Locality: Moctezuma Mine (Bambolla Mine), Moctezuma, Municipio de Moctezuma, Sonora, Mexico (Locality at mindat.org) Picture width 2 mm. Collection and photograph Christian Rewitzer Deutsch: Carlfriesit Fundort: Moctezuma Mine (Bambolla Mine), Montezuma, Municipio de Moctezuma, Sonora , Mexiko (Fundort bei mindat.org)
context_page_description: Carlfriesite is a rare tellurium mineral with the formula CaTe⁴⁺₂Te⁶⁺O₈, or more simplified: CaTe₃O₈. It has a Moh's hardness of 3.5 and it occurs in various shades of yellow, ranging from bright yellow to a light buttery color. It was named after Carl Fries Jr. from the U.S. Geological Survey and the Geological Institute of the National University, Mexico City, Mexico. It was previously thought to have the formula H₄Ca(TeO₃)₃, but this was proven to be incorrect. It has no uses beyond being a collector's item.
context_section_description: Carlfriesite is a rare tellurium mineral with the formula CaTe⁴⁺₂Te⁶⁺O₈, or more simplified: CaTe₃O₈. It has a Moh's hardness of 3.5 and it occurs in various shades of yellow, ranging from bright yellow to a light buttery color. It was named after Carl Fries Jr. (1910–1965) from the U.S. Geological Survey and the Geological Institute of the National University, Mexico City, Mexico. It was previously thought to have the formula H₄Ca(TeO₃)₃, but this was proven to be incorrect. It has no uses beyond being a collector's item.
caption: Carlfriesite from Moctezuma Mine, Moctezuma, Municipio de Moctezuma, Sonora, Mexico. Picture width: 2 mm.
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