acerd�se Mineral Data, minerology database

Mineral Reference Lookup for acerdèse

This reference page contains mineralogic data for acerdèse and folklore and metaphysical beliefs. If the mineral is an alternate naming of a more common name, the more common mineral's data is displayed below the list of synonyms.

Minerals matching acerdèse in the database: Acerdèse Acerdèse fibreuse

Mineralogical Reference

acerdèse

Mineral	Acerdèse
Synonym	Manganite

Manganite (synonym)

Mineral	Manganite
Chemistry	Mn 3+ O(OH)
Color	grey-black black
CrystalSystem	Monoclinic
Cleavage	Perfect
Hardness	4
Streak	dark brown
IMAStatus	Approved - Published prior to 1959 (pre-IMA) - Gra
Discovered	1827
CellParameters	a = 8.98b = 5.28c = 5.71 β=90°
Ratio	a:b:c = 1.701 : 1 : 1.081
OpticalType	Biaxial (+)
RI	n α =2.250 n β =2.250 n γ =2.530
Birefringence	δ=0.280
SurfaceRelief	Very High
TypeLocality	Ilfeld Nordhausen Harz Mts Thuringia Germany
Strunz	4/F.06-70 4 : Oxides & Hydroxides F : Hydroxides and oxidic hydrateswater-bearing oxides with layered structure 06 : Diaspore - Goethite - Faitknechtite series

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