Rosemaryite Mineral Data

Rosemaryite Mineral Data +

General Rosemaryite Information

Chemical Formula:

(Na,Ca,Mn++)(Mn++,Fe++)(Fe+++,Fe++,Mg)Al(PO4)3

Composition:

Molecular Weight = 441.80 gm

Sodium 3.12 % Na 4.21 % Na₂O

Calcium 1.81 % Ca 2.54 % CaO

Magnesium 0.55 % Mg 0.91 % MgO

Manganese 11.19 % Mn 14.45 % MnO

Aluminum 3.66 % Al 6.92 % Al₂O₃

Iron 15.17 % Fe 4.88 % FeO / 16.27 % Fe₂O₃

Phosphorus 21.03 % P 48.19 % P₂O₅

Oxygen 43.46 % O

______ ______

100.00 % 98.37 % = TOTAL OXIDE

Empirical Formula:

Na_0.6Mn²⁺_0.2Ca_0.2Mn²⁺_0.7Fe²⁺_0.3Fe³⁺_0.9Mg_0.1Al_0.6(PO₄)₃

Environment:

In a zoned, complex granite pegmatite.

IMA Status:

Approved IMA 1978

Locality:

Rock Ridge pegmatite, near Custer, Custer County, South Dakota, USA. Link to MinDat.org Location Data.

Name Origin:

Named for F. Rosemay Wyllie wife of Professor Peter J. Wyllie, namesake of wyllieite.

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Rosemaryite Crystallography

Axial Ratios:

a:b:c =0.9584:1:0.5131

Cell Dimensions:

a = 11.868, b = 12.382, c = 6.354, Z = 4; beta = 114.52° V = 849.51 Den(Calc)= 3.45

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.674(1), 2.693(1), 6.15(0.6),

Physical Properties of Rosemaryite

Cleavage:

[???] Distinct

Color:

Bluish green, Dark green, Deep brown, Reddish brown.

Density:

3.6 - 3.601, Average = 3.6

Diaphaniety:

Transparent to Translucent

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Metallic

Streak:

greenish white

Optical Properties of Rosemaryite

Optical Data:

Biaxial (+), a=1.688, b=1.691, g=1.696, bire=0.0080, 2V(Calc)=76, 2V(Meas)=80.

Pleochroism (x):

pale brownish yellow.

Pleochroism (y):

pale brownish yellow.

Pleochroism (z):

pale greenish yellow.

Calculated Properties of Rosemaryite

Electron Density:

r_electron=3.35 gm/cc
note: r_Rosemaryite=3.45 gm/cc.

Fermion Index

Fermion Index = 0.00399
Boson Index = 0.99601

Photoelectric:

PE_Rosemaryite= 8.82 barns/electron
U=PE_Rosemaryite x r_electron= 29.52 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Rosemaryite is Not Radioactive

Rosemaryite Classification

Dana Class:

38.2.4.3 (38)Anhydrous Phosphates, etc

(38.2)(A+ B++)5 (XO4)3

(38.2.4)Alluaudite-Wyllieite Group (Wyllieite Subgroup)

38.2.4.1 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

38.2.4.2 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

38.2.4.3 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

38.2.4.4 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 2₁/n 2/m

38.2.4.5 Bobfergusonite Na2Mn5FeAl(PO4)6 P 2₁/n 2/m

38.2.4.6 Bradaczekite! NaCu4(AsO4)3 C 2/c 2/m

38.2.4.7 Ferrorosemaryite! []NaFeFeAl(PO4)3 P 2₁/n 2/m

Strunz Class:

VII/A.06-50 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of medium and big size: Mg, Mn,Fe, Cu, Zn, and Ca, Na

VII/A.06 - Alluaudite- Hagendorfite group

VII/A.06-10 Qingheiite Na2(Mn,Mg,Fe)(Al,Fe)(PO4)3 P 2₁/n 2/m

VII/A.06-20 Bobfergusonite Na2Mn5FeAl(PO4)6 P 2₁/n 2/m

VII/A.06-30 Ferrowyllieite (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

VII/A.06-40 Wyllieite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

VII/A.06-50 Rosemaryite (Na,Ca,Mn)(Mn,Fe)(Fe,Fe,Mg)Al(PO4)3 P 2₁/n 2/m

VII/A.06-60 Ferroalluaudite NaCaFe(Fe,Mn,Fe,Mg)2(PO4)3 C 2/a 2/m

VII/A.06-70 Alluaudite NaCaFe(Mn,Fe,Fe,Mg)2(PO4)3 C 2/c 2/m

VII/A.06-80 Maghagendorfite NaMgMn(Fe,Fe)2(PO4)3 I 2₁/a 2/m

VII/A.06-85 Ferrohagendorfite* (Na,Ca)2Fe(Fe,Fe)2(PO4)3 I 2₁/a 2/m

VII/A.06-90 Hagendorfite NaCaMn(Fe,Fe,Mg)2(PO4)3 I 2₁/a 2/m

VII/A.06-100 Varulite NaCaMn(Mn,Fe,Fe)2(PO4)3 C 2/c 2/m

VII/A.06-110 Arseniopleite (Ca,Na)(Na,Pb)Mn(Mn,Mg,Fe)2(AsO4)3 I2/a 2/m

VII/A.06-120 Caryinite (Na,Pb)(Ca,Na)(Ca,Mn)(Mn,Mg)2(AsO4)3 I2/c 2/m

Other Rosemaryite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(AntBidBlaNic4) OPTIC PROP.(AntBidBlaNic4)

See Also:

Links to other databases for Rosemaryite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Rosemaryite

(Na,Ca,Mn++)(Mn++,Fe++)(Fe+++,Fe++,Mg)Al(PO4)3
Dana No: 38.2.4.3 Strunz No: VII/A.06-50
Locality:

Notes: