jahnsite-(camnmg) Mineral Data, minerology database

Mineral Reference Lookup for jahnsite-(camnmg)

This reference page contains mineralogic data for jahnsite-(camnmg) 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 jahnsite-(camnmg) in the database: Jahnsite-(CaMnMg)

Mineralogical Reference

jahnsite-(camnmg)

Mineral	Jahnsite-(CaMnMg)
Chemistry	CaMn 2+ (MgFe 2+ ) 2 Fe 3+ 2 [OH\|(PO 4 ) 2 ] 2 · 8H 2 O
Color	brown Purplish brown Yellow Yellow orange Greenish Yellow
Luster	AdamantineVitreous
Transparency	Monoclinic
CrystalSystem	Monoclinic
Cleavage	Distinct/Good Good on the {001}
Hardness	4
SpecificGravity	2.73 g/ccm
Streak	White
IMAStatus	Approved
CellParameters	a = 14.94b = 7.14c = 9.93 β=110.68°
Ratio	a:b:c = 2.092 : 1 : 1.391
OpticalType	Biaxial (+)
RI	n α =1.640 n β =1.658 n γ =1.670
Birefringence	δ=0.030
SurfaceRelief	Moderate
TypeLocality	Tip Top Mine Fourmile Custer District Custer Co. South Dakota U S A
Strunz	7/D.29-50 7 : PhosphatesArsenatesVanadates D : Water-bearing phosphates with unfamiliar anionsmostly cations of small size: BeLi 29 : Whiteite - Jahnsite group