Mineralpedia Details for Mangangordonite
Named as being the manganese analogue of gordonite. Mangangordonite is a rare mineral that occurs as a secondary mineral in granite pegmatites. It can be found in localities only in the United States, Russia, and Germany. Associated minerals include Jahnsite, beraunite, strunzite, strengite, spodumene, quartz, muscovite, fluorapatite, tourmaline, and siderite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/mangangordonite.pdf
Mangangordonite from Foote mine, Cleveland Co., North Carolina, United States
Light pink micro crystals in a small 1mm cluster in vug.
Pearly light pink Mangangordonite crystals to perhaps 0.3mm occuring as singles and groups in 1cm vug of corroded Spodumene/Quartz matrix. The Quartz matrix is odd in the way that it is granulated. This fact provides a clue to the deposition of this pegmatite according to some of the authors who studied this deposit such as J. White. White indicated that this texture, along with other evidence, shows that the Foote pegmatite may have been deposited in a crystallized state. In other words it was squeezed into the country rock after or close to solidification.