Neotocite Mineral Data

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.

Name Pronunciation:

Neotocite + Pronunciation

Synonym:

Chinglusuite

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

Diaphaneity:

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:

Bulk Density (Electron Density)=2.75 gm/cc
note: Specific Gravity of Neotocite =2.80 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Neotocite= 10.49 barns/electron
U=PE_Neotocite x rElectron Density= 28.82 barns/cc.

Radioactivity:

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

Neotocite Classification

Dana Class:

71.01.04.04 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.01)with 1:1 layers

(71.01.04)Allophane group

71.01.04.01 Allophane Al2O3•(SiO2)1.3-2•((H2O))2.5-3 None

71.01.04.02 Hisingerite Fe2Si2O5(OH)4•2(H2O) Unk Mono

71.01.04.03 Imogolite Al2SiO3(OH)4 ? Mono

71.01.04.04 Neotocite (Mn,Fe)SiO3•(H2O)(?) None

71.01.04.05 Zinalsite! Zn2AlSi2O5(OH)4•2(H2O)(?) Mono

Strunz Class:

09.ED.20 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.ED -Phyllosilicates with kaolinite layers

09.ED.20 Allophane Al2O3•(SiO2)1.3-2•((H2O))2.5-3 None

09.ED.20 Chrysocolla (Cu,Al)2H2Si2O5(OH)4•n(H2O) Unk Ortho

09.ED.20 Neotocite (Mn,Fe)SiO3•(H2O)(?) None

09.ED.20 Imogolite Al2SiO3(OH)4 ? Mono

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 - GeoScienceWorld
10 - Google Images
11 - Google Scholar
12 - Handbook of Mineralogy (MinSocAm)
13 - Handbook of Mineralogy (UofA)
14 - MinDAT
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info

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Ask about Neotocite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Neotocite

(Mn,Fe++)SiO3•(H2O) (?)
Dana No: 71.01.04.04 Strunz No: 09.ED.20
Locality:

Notes: