Metasideronatrite Mineral Data

Metasideronatrite Mineral Data +

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General Metasideronatrite Information

Chemical Formula:

Na2Fe+++(SO4)2(OH)·(H2O)

Composition:

Molecular Weight = 328.98 gm

Sodium 13.98 % Na 18.84 % Na₂O

Iron 16.98 % Fe 24.27 % Fe₂O₃

Hydrogen 0.92 % H 8.21 % H₂O

Sulfur 19.49 % S 48.67 % SO₃

Oxygen 48.63 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂Fe³⁺(SO₄)₂(OH)·(H₂O)

Environment:

Associated with other secondary sulfates.

IMA Status:

Valid Species (Pre-IMA) 1938

Locality:

Chuquicamata, Antofagasta, Chile. Link to MinDat.org Location Data.

Name Origin:

Named for the similarity to sideronatrolite with a lower hydrate.

Metasideronatrite Image

Images:

Click Here for Larger Metasideronatrite Image

Metasideronatrite Tamarugite

Comments: Orange metasideronatrite with white tamarugite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Metasideronatrite Ungemachite

Comments: Translucent rounded ungemachite microcrystal on yellow metasideronatrite.
Location: Chuquicamata, Antofagasta, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Metasideronatrite Crystallography

Axial Ratios:

a:b:c =0.1148:1:0.1217

Cell Dimensions:

a = 7.36, b = 64.08, c = 7.8, Z = 16; V = 3,678.70 Den(Calc)= 2.38

Crystal System:

OrthorhombicSpace Group: Pbnm or Pbn21

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

By Intensity(I/I_o): 3.68(1), 8.05(0.9), 6.68(0.7),2.67(0.5), 2.75(0.5), 3.49(0.4), 3.15(0.3), 3.99(0.3),

Physical Properties of Metasideronatrite

Cleavage:

[100] Perfect, [010] Perfect, [001] Distinct

Color:

Yellow, Golden yellow, Orange, Pale brown.

Density:

2.68

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Hardness:

1.5-2.5 - Hardness very near Gypsum

Luster:

Silky

Streak:

pale yellow

Optical Properties of Metasideronatrite

Gladstone-Dale:

CI meas= 0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.084 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2454,KPDmeas= 0.2179,KC= 0.2263

Optical Data:

Biaxial (+), a=1.543, b=1.575, g=1.634, bire=0.0910, 2V(Calc)=76, 2V(Meas)=60.

Pleochroism (x):

colorless.

Pleochroism (y):

light yellow.

Pleochroism (z):

brownish yellow.

Calculated Properties of Metasideronatrite

Electron Density:

r_electron=2.66 gm/cc
note: r_{Metasideronatrite}=2.68 gm/cc.

Fermion Index

Fermion Index = 0.00529
Boson Index = 0.99471

Photoelectric:

PE_{Metasideronatrite}= 6.42 barns/electron
U=PE_{Metasideronatrite} x r_electron= 17.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Metasideronatrite is Not Radioactive

Metasideronatrite Classification

Dana Class:

31.8.4.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.8)where (A+ B++)3 (XO4)2 Zq·x(H2O)

(31.8.4)Dana Group

31.8.4.1 Metasideronatrite Na2Fe(SO4)2(OH)·(H2O) Pbnm or Pbn21 Ortho

Strunz Class:

VI/D.15-20 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium and very big size

VI/D.15 - Sideronatrite - Clairite series

VI/D.15-10 Sideronatrite Na2Fe(SO4)2(OH)·3(H2O) Pbnm 2/m 2/m 2/m

VI/D.15-20 Metasideronatrite Na2Fe(SO4)2(OH)·(H2O) Pbnm or Pbn21 Ortho

VI/D.15-30 Clairite (NH4)2Fe3(SO4)4(OH)3·3(H2O) Unk Tri

Other Metasideronatrite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Metasideronatrite :
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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Metasideronatrite

Na2Fe+++(SO4)2(OH)·(H2O)
Dana No: 31.8.4.1 Strunz No: VI/D.15-20
Locality:

Notes: