Chlorophoenicite Mineral Data

Chlorophoenicite Mineral Data +

General Chlorophoenicite Information

Chemical Formula:

(Mn,Mg)3Zn2(AsO4)(OH,O)6

Composition:

Molecular Weight = 980.21 gm

Magnesium 7.44 % Mg 12.34 % MgO

Manganese 16.81 % Mn 21.71 % MnO

Zinc 26.68 % Zn 33.21 % ZnO

Arsenic 15.29 % As 23.45 % As₂O₅

Hydrogen 1.13 % H 10.11 % H₂O

Oxygen 32.64 % O

______ ______

100.00 % 100.82 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_2.25Mg_2.25Mg_0.75Mn²⁺_0.75Zn₂(AsO₄)(OH)_5.5O_0.5

IMA Status:

Valid Species (Pre-IMA) 1924

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 24432

PDF 25-1159

Chlorophoenicite Image

Images:

Chlorophoenicite

Comments: Clear tabular crystals of chlorophoenicite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Chlorophoenicite Crystallography

Axial Ratios:

a:b:c =6.9216:1:2.2048

Cell Dimensions:

a = 22.98, b = 3.32, c = 7.32, Z = 1; beta = 106° V = 536.83 Den(Calc)= 3.03

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

Forms:

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Forms: [ 2 0 3] [ 1 1 1] [ 1 0 6] [ 1 0 2] [ 1 0 0] [ 0 0 1]

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Crystal Structure:

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Moore P B , American Mineralogist , 53 (1968) p.1110-1119, The crystal structure of chlorophoenicite

Physical Properties of Chlorophoenicite

Cleavage:

[???] Distinct

Color:

Grayish green, Purplish red.

Density:

3.55

Diaphaniety:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

3-3.5 - Calcite-Copper Penny

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Pearly

Optical Properties of Chlorophoenicite

Gladstone-Dale:

CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.184 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2276,KPDmeas= 0.1943,KC= 0.1923

Optical Data:

Biaxial (-), a=1.682, b=1.69, g=1.697, bire=0.0150, 2V(Calc)=84, 2V(Meas)=83. Dispersion relatively strong.

Calculated Properties of Chlorophoenicite

Electron Density:

r_electron=3.39 gm/cc
note: r_{Chlorophoenicite}=3.55 gm/cc.

Fermion Index

Fermion Index = 0.01853
Boson Index = 0.98147

Photoelectric:

PE_{Chlorophoenicite}= 28.26 barns/electron
U=PE_{Chlorophoenicite} x r_electron= 95.81 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chlorophoenicite is Not Radioactive

Chlorophoenicite Classification

Dana Class:

41.1.1.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.1)where (A++)m (XO4)p Zq, with m:p>4:1

(41.1.1)Dana Group

41.1.1.1 Chlorophoenicite (Mn,Mg)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

41.1.1.2 Magnesium-chlorophoenicite (Mg,Mn)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

41.1.1.3 Jarosewichite Mn3Mn(AsO4)(OH)6 C 222,C mm2,C 2m2(/n) Ortho

Strunz Class:

VII/B.17-20 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O,OH, cations of medium size: Mg, Mn, Fe, Cu, Zn, Pseudomalachite group and related compounds

VII/B.17 - Pseudomalachite group, Magnesium-chlorophoenicite - Jarosewichite series

VII/B.17-10 Magnesium-chlorophoenicite (Mg,Mn)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

VII/B.17-20 Chlorophoenicite (Mn,Mg)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

VII/B.17-30 Jarosewichite Mn3Mn(AsO4)(OH)6 C 222,C mm2,C 2m2(/n) Ortho

Other Chlorophoenicite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Chlorophoenicite

(Mn,Mg)3Zn2(AsO4)(OH,O)6
Dana No: 41.1.1.1 Strunz No: VII/B.17-20
Locality:

Notes: