...Donald R. Peacor; Pete J. Dunn; William B. Simmons; Frederick J. Wicks Abstract Manganarsite, ideally Mn 3 As 2 O 4 (OH) 4 , is a new mineral from Långban, Sweden. X-ray diffraction data imply it has space group P 31 m, P 31 m or P 312, with a = 11.451(6), c = 7.252(6) Å, Z = 4, although optical...

... of electron-microprobe data: As 2 O 3 36.59, MoO 3 53.09, H 2 O 11.34, Total 101.02 wt.%. Empirical formula: [(MoO 2 ) 1.93 (H 2 O) 2.00 (As 2 O 5 ) 0.97 ]·1.30H 2 O. Relationship to other species : It is a diarsenite. Other diarsenites are paulmooreite, gebhardite, fetiasite, leiteite and manganarsite...

... for manganarsite; and 532, 568 and 656 cm –1 for stenhuggarite (Chukanov, 2014 ). It should be noted that characteristic bands of As 4+ –O stretching vibrations are observed in the range from 750 to 900 cm –1 . Fig. 5. Powder IR absorption spectra of (1) cuatrocapaite-(NH 4 ) and (2) cuatrocapaite-(K...

... ore district. Vajdakite belongs to a small group of diarsenites that includes such minerals as paulmooreite [with structure motif (As 2 O 5 ) 4− ; Araki et al. 1980 ], gebhardite, fetiasite, leiteite, and manganarsite ( Mandarino 1999 ). The Jáchymov ore district coincides...

... Arsenites :  armangite, ecdemite, finnemanite, freedite, heliophyllite, magnussonite, manganarsite, paulmooreite, rouseite, stenhuggarite, synadelphite, trigonite Arsenite-arsenates :  hematolite Arsenates :  adelite, akrochordite, allactite, arseniopleite, arsenoclasite, bergslagite...