Minerals known from single sample

Alflarsenite	NaCa   2 Be   3 Si   4 O   13 (OH) · 2H   2 O	Tuften (Tuften 1 Quarry; Tuften 2 Quarry), Tvedalen, Larvik, Vestfold, Norway
Andyrobertsite	KCdCu   5 (AsO   4 )   4 (H   2 AsO   4 ) · 2H   2 O	Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia
Burgessite	Co   2 (HAsO   4 )   2  · 5H   2 O	Keeley-Frontier Mine (Canadian Keeley; Frontier Mine; Keeley Mine), South Lorrain Township, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Chromschieffelinite	Pb   10 Te 6+ 6 O   20 (OH)   14 (CrO   4 )(H   2 O)   5	Bird Nest drift, Otto Mountain, Baker, San Bernardino Co., California, USA
Heftetjernite	ScTaO   4	Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway
Kittatinnyite	Ca   2 Mn   2 Mn(SiO   4 )   2 (OH)   4  · 9H   2 O	Taylor Mine, Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Mcauslanite	HFe 2+ 3 Al   2 (PO   4 )   4 F · 18H   2 O	East Kemptville Tin Mine, East Kemptville, Argyle, Yarmouth Co., Nova Scotia, Canada
Milotaite	PdSbSe	Předbořice, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic
Oftedalite	(Sc,Ca,Mn 2+   )   2 K[(Be,Al)   3 Si   12 O   30 ]	Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway
Rouseite	Pb   2 Mn 2+   [AsO   3 ]   2  · 2H   2 O	Långban, Filipstad, Värmland, Sweden
Samfowlerite	Ca   28 Mn   6 Zn   4 (Be,Zn)   4 Be   12 [(OH)   3 |(SiO   4 )   3 |(Si   2 O   7 )   2 ]   4	Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Wawayandaite	Ca   6 Mn   2 BBe   9 Si   6 O   23 (OH,Cl)   15	Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Total of single specimen minerals: 12