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Barwood (1947, Alameda, California, USA - 2016, Alabama, USA), professor of geology at Troy University, Troy, Alabama, USA. Dr. Barwood was also very active in the mineral collecting community and on MinDat.","2025-08-11 12:15:20",[],[75,82,89,95],{"id":76,"name":77,"entrytype":9,"csystem":34,"ima_formula":78,"mindat_formula":79,"hmin":40,"hmax":40,"dmeas":46,"dcalc":80,"primary_image_id":81},1590,"Franciscanite","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>(V\u003Csup>5+\u003C\u002Fsup>◻)(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>3\u003C\u002Fsub>","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>(V\u003Csup>5+\u003C\u002Fsup>,◻)\u003Csub>2\u003C\u002Fsub>(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(O,OH)\u003Csub>6\u003C\u002Fsub>","3.97",9351,{"id":83,"name":84,"entrytype":9,"csystem":34,"ima_formula":85,"mindat_formula":86,"hmin":40,"hmax":40,"dmeas":33,"dcalc":87,"primary_image_id":88},3054,"Örebroite","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>(Sb\u003Csup>5+\u003C\u002Fsup>Fe\u003Csup>3+\u003C\u002Fsup>)(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>6\u003C\u002Fsub>","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>3\u003C\u002Fsub>(Sb\u003Csup>5+\u003C\u002Fsup>,Fe\u003Csup>3+\u003C\u002Fsup>)(SiO\u003Csub>4\u003C\u002Fsub>)(O,OH)\u003Csub>3\u003C\u002Fsub>","4.77",18198,{"id":90,"name":91,"entrytype":9,"csystem":34,"ima_formula":92,"mindat_formula":93,"hmin":45,"hmax":40,"dmeas":11,"dcalc":94,"primary_image_id":11},53560,"Scorticoite","Mn\u003Csub>6\u003C\u002Fsub>(Sb◻)(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>3\u003C\u002Fsub>","Mn\u003Csub>6\u003C\u002Fsub>(Sb,◻)\u003Csub>Σ2\u003C\u002Fsub>(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>3\u003C\u002Fsub>","4.416",{"id":96,"name":97,"entrytype":9,"csystem":34,"ima_formula":98,"mindat_formula":99,"hmin":40,"hmax":40,"dmeas":100,"dcalc":101,"primary_image_id":11},4264,"Welinite","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>(W\u003Csup>6+\u003C\u002Fsup>◻)(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>(OH)\u003Csub>2\u003C\u002Fsub>","Mn\u003Csup>2+\u003C\u002Fsup>\u003Csub>6\u003C\u002Fsub>(W\u003Csup>6+\u003C\u002Fsup>,Mg)\u003Csub>2\u003C\u002Fsub>(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(O,OH)\u003Csub>6\u003C\u002Fsub>","4.47","4.41",[],[104,105,106],{"id":76,"name":77,"entrytype":9,"csystem":34,"ima_formula":78,"mindat_formula":79,"hmin":40,"hmax":40,"dmeas":46,"dcalc":80,"primary_image_id":81},{"id":83,"name":84,"entrytype":9,"csystem":34,"ima_formula":85,"mindat_formula":86,"hmin":40,"hmax":40,"dmeas":33,"dcalc":87,"primary_image_id":88},{"id":96,"name":97,"entrytype":9,"csystem":34,"ima_formula":98,"mindat_formula":99,"hmin":40,"hmax":40,"dmeas":100,"dcalc":101,"primary_image_id":11},[108],{"id":109,"txt":110,"latitude":111,"longitude":112,"country":113},7795,"Big Rock Quarry (3M Quarry; Arch Street Pike Quarry), Granite Mountain area, Little Rock, Pulaski County, Arkansas, USA",34.6908333,-92.2880556,"USA",2,[116,120,124],{"id":117,"year":27,"html":118,"doi":119},244950,"Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017, CNMNC Newsletter No 39. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  81 (5) 1279-1286 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2017.081.072'>doi:10.1180\u002Fminmag.2017.081.072\u003C\u002Fa>","10.1180\u002Fminmag.2017.081.072",{"id":121,"year":28,"html":122,"doi":123},65533,"Kampf, Anthony R., Celestian, Aaron J., Nash, Barbara P. (2018) Barwoodite, Mn2+6(Nb5+,□)2(SiO4)2(O,OH)6, a New Member of the Welinite Group from Granite Mountain, Arkansas. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  56 (5) 799-809 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3749\u002Fcanmin.1800032'>doi:10.3749\u002Fcanmin.1800032\u003C\u002Fa>","10.3749\u002Fcanmin.1800032",{"id":125,"year":126,"html":127,"doi":11},16963122,2020,"(2020) Barwoodite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002FBarwoodite.pdf' class='refpdflink'>\u003C\u002Fa>",[],[130],{"id":131,"url":132,"label":133,"formula":134,"spacegroup":135,"year":28},1258,"\u002Fcif\u002F1258.cif","Kampf 2018","Mn3 Nb.458 Si O7 H3","P 3",[137,138],"Barwoodiet","IMA2017-046",[140,144,149,153],{"lang":141,"names":142},"ca",[143],"barwoodita",{"lang":145,"names":146},"de",[147,148],"Barwoodit","IMA 2017-046",{"lang":150,"names":151},"eu",[152],"Barwoodita",{"lang":154,"names":155},"it",[7],"Q42303402",{"history":11,"applications":11}]