Neotocite Mineral Data

Neotocite Mineral Data +

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General Neotocite Information

Chemical Formula:

(Mn,Fe++)SiO3·(H2O) (?)

Composition:

Molecular Weight = 149.26 gm

Manganese 27.60 % Mn 35.64 % MnO

Iron 9.35 % Fe 12.03 % FeO

Silicon 18.82 % Si 40.25 % SiO₂

Hydrogen 1.35 % H 12.07 % H₂O

Oxygen 42.88 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_0.75Fe²⁺_0.25SiO₃·(H₂O)

Environment:

Secondary mineral from the alteration of rhodonite and other manganese silicates.

IMA Status:

Valid Species (Pre-IMA) 1848

Locality:

Eric-Ers mine, Torsaker, Gastrikland, Sweden. Link to MinDat.org Location Data.

Name Origin:

From the Greek "Neotokos" = of recent origin, being a product of deterioration of other species.

Synonym:

Penwithite

Stratopeite

Sturtite

Neotocite Image

Images:

Neotocite

Comments: Dark brown resinous massive neotocite.
Location: Buzzarla Mine, San Luis Obispo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Neotocite Crystallography

Crystal System:

Amorphous- No Crystals

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

By Intensity(I/I_o): 1.54(1), 3.59(1), 4.36(1),

Physical Properties of Neotocite

Cleavage:

None

Color:

Black, Dark brown, Liver brown.

Density:

2.8

Diaphaniety:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Amorphous - No crystalline form or imitative shape.

Habit:

Colloform - Forming from a gel or colloidal mass.

Hardness:

3-4 - Calcite-Fluorite

Luster:

Resinous

Streak:

brown

Optical Properties of Neotocite

Optical Data:

NCalc= 1.61 - from Gladstone-Dale relationship (KC = 0.2176) where Ncalc=Dmeas*KC+1

Calculated Properties of Neotocite

Electron Density:

r_electron=2.75 gm/cc
note: r_Neotocite=2.80 gm/cc.

Fermion Index

Fermion Index = 0.01097
Boson Index = 0.98903

Photoelectric:

PE_Neotocite= 10.49 barns/electron
U=PE_Neotocite x r_electron= 28.82 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Neotocite is Not Radioactive

Neotocite Classification

Dana Class:

71.1.4.4 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.1)with 1:1 layers

(71.1.4)Allophane group

71.1.4.1 Allophane Al2O3·(SiO2)1.3-2·((H2O))2.5-3 None

71.1.4.2 Hisingerite Fe2Si2O5(OH)4·2(H2O) Unk Mono

71.1.4.3 Imogolite Al2SiO3(OH)4 ? Mono

71.1.4.4 Neotocite (Mn,Fe)SiO3·(H2O)(?) None

71.1.4.5 Zinalsite! Zn2AlSi2O5(OH)4·2(H2O)(?) Mono

Strunz Class:

VIII/H.26-60 VIII - Silicates

VIII/H - Phyllosilicates (layered) Mica like with [Si4O10]4- and related groups

VIII/H.26 - Allophane - Sturtite series

VIII/H.26-10 Allophane Al2O3·(SiO2)1.3-2·((H2O))2.5-3 None

VIII/H.26-30 Imogolite Al2SiO3(OH)4 ? Mono

VIII/H.26-40 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.5(Si,Al)2O5(OH)4 Cm m

VIII/H.26-50 Hisingerite Fe2Si2O5(OH)4·2(H2O) Unk Mono

VIII/H.26-60 Neotocite (Mn,Fe)SiO3·(H2O)(?) None

VIII/H.26-70 Sturtite* (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3·10(H2O) None

Other Neotocite Information

References:

NAME( Ford32) PHYS. PROP.(Ford32)

See Also:

Links to other databases for Neotocite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - Franklin Minerals(Dunn)
8 - Franklin Minerals(Palache)
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - MinMax(Deutsch)
15 - MinMax(English)
16 - Mineralienatlas (Deutsch)
17 - QUT Mineral Atlas
18 - Ruff.Info

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Translate Neotocite Mineral Data :

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

Neotocite

(Mn,Fe++)SiO3·(H2O) (?)
Dana No: 71.1.4.4 Strunz No: VIII/H.26-60
Locality:

Notes: