achrochordite Mineral Data, minerology database

Mineral Reference Lookup for achrochordite

This reference page contains mineralogic data for achrochordite 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 achrochordite in the database: Achrochordite

Mineralogical Reference

achrochordite

Mineral	Achrochordite
Synonym	Akrochordite

Akrochordite (synonym)

Mineral	Akrochordite
Chemistry	Mn 2+ 4 Mg[(OH) 2 \|AsO 4 ] 2 · 4H 2 O
Color	red dish brown
CrystalSystem	Monoclinic
Cleavage	Distinct/Good
Hardness	3½
IMAStatus	Approved - Published prior to 1959 (pre-IMA) - Gra
Discovered	1922
CellParameters	a = 5.7b = 17.6c = 6.75 β=99.8°
Ratio	a:b:c = 0.324 : 1 : 0.384
OpticalType	Biaxial
RI	n α =1.672 n β =1.676 n γ =1.683
Birefringence	δ=0.011
SurfaceRelief	High
TypeLocality	Långban Filipstad Värmland Sweden
Strunz	7/D.16-30 7 : PhosphatesArsenatesVanadates D : Water-bearing phosphates with unfamiliar anionsmostly cations of small size: BeLi 16 : Luetheite - Akrochordite series

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