Metasideronatrite Mineral Data

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.

Name Pronunciation:

Metasideronatrite + Pronunciation

Metasideronatrite Image

Images:

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:

Ungemachite Metasideronatrite

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:

Orthorhombic Space 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
Ncalc = 1.54 - 1.61

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:

Bulk Density (Electron Density)=2.66 gm/cc
note: Specific Gravity of Metasideronatrite =2.68 gm/cc.

Fermion Index:

Fermion Index = 0.0052958125
Boson Index = 0.9947041875

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Metasideronatrite is Not Radioactive

Metasideronatrite Classification

Dana Class:

31.08.04.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.08)where (A+ B++)3 (XO4)2 Zqï¿½x(H2O)

(31.08.04)Dana Group

31.08.04.01 Metasideronatrite Na2Fe(SO4)2(OH)•(H2O) Pbnm or Pbn21 Ortho

Strunz Class:

07.DF.20 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DF -With large and medium-sized cations

07.DF.20 Metasideronatrite Na2Fe(SO4)2(OH)•(H2O) Pbnm or Pbn21 Ortho

07.DF.20 Sideronatrite Na2Fe(SO4)2(OH)•3(H2O) Pbnm 2/m 2/m 2/m

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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Metasideronatrite Specimen Label here :

Metasideronatrite

Na2Fe+++(SO4)2(OH)•(H2O)
Dana No: 31.08.04.01 Strunz No: 07.DF.20
Locality:

Notes:

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