Protomangano-ferro-anthophyllite Mineral Data

Advertisment

McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

General Protomangano-ferro-anthophyllite Information

Chemical Formula:

(Mn++,Fe++)2(Fe++,Mg)5(Si4O11)2(OH)2

Composition:

Molecular Weight = 969.16 gm

Magnesium 2.51 % Mg 4.16 % MgO

Manganese 5.67 % Mn 7.32 % MnO

Iron 28.81 % Fe 37.07 % FeO

Silicon 23.18 % Si 49.60 % SiO₂

Hydrogen 0.21 % H 1.86 % H₂O

Oxygen 39.62 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺Fe²⁺₅MgSi₈O₂₂(OH)₂

Environment:

Bedded Mn deposit at Yokoneyama. At the Suishoyama pegmatite the mineral is mixed with clinoamphiboles.

IMA Status:

Approved IMA 1986 (Dana # Added)

Locality:

Yokoneyama, Tochigi Prefecture, Japan. Siushoyama, Fukushima Prefecture, Japan. Link to MinDat.org Location Data.

Name Origin:

The name indicates the structural relationship to protoamphiboles, and the compositional relationship to protoferro-anthophyllite and anthophyllite.

Name Pronunciation:

Protomangano-ferro-anthophyllite + Pronunciation

Synonym:

IMA1986-007

Protomangano-ferro-anthophyllite Image

Images:

Protomangano-ferro-anthophyllite

Comments: Light brown, silky protomangano-ferro-anthophyllite crystals on brown fayalite with grunerite.
Location: Suishouyama Pegmatite, Lizaka, Kawamatacho, Fukushima, Japan. Scale: Specimen Size 3x3 cm.
© Diederik Visser

Protomangano-ferro-anthophyllite Crystallography

Axial Ratios:

a:b:c =0.5149:1:0.292

Cell Dimensions:

a = 9.425, b = 18.303, c = 5.345, Z = 2; V = 922.04 Den(Calc)= 3.49

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnmn

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

By Intensity(I/I_o): 3.098(1)(310), 8.366(0.92)(110), 2.548(0.58)(161,251,112),3.285(0.55)(240), 2.881(0.29)(151), 3.701(0.24)(131), 2.027(0.21)(361), 4.584(0.2)(040),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Sueno S , Matsuura S , Gibbs G V , Boisen M B , Physics and Chemistry of Minerals , 25 (1998) p.366-377, A crystal chemical study of protoanthophyllite:, orthoamphiboles with the protoamphibole structure, Sample: PMFA Yokene Mine

Physical Properties of Protomangano-ferro-anthophyllite

Cleavage:

{210} Perfect

Color:

Light brownish yellow, White.

Density:

3.5

Diaphaneity:

Transparent

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.

Hardness:

5-6 - Between Apatite and Orthoclase

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Protomangano-ferro-anthophyllite

Gladstone-Dale:

CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2044,KPDmeas= 0.2038,KC= 0.2019
Ncalc = 1.7 - 1.71

Optical Data:

Biaxial (-), a=1.695, b=1.714, g=1.731, bire=0.0360

Calculated Properties of Protomangano-ferro-anthophyllite

Electron Density:

Bulk Density (Electron Density)=3.42 gm/cc
note: Specific Gravity of Protomangano-ferro-anthophyllite =3.50 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Protomangano-ferro-anthophyllite}= 10.97 barns/electron
U=PE_{Protomangano-ferro-anthophyllite} x rElectron Density= 37.49 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Protomangano-ferro-anthophyllite is Not Radioactive

Protomangano-ferro-anthophyllite Classification

Dana Class:

66.01.02.03b (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.01)with P=2 amphibole configuration

(66.01.02)Dana Group

66.01.02.01 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.02 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.02a Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m

66.01.02.03 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.03a Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

66.01.02.03b Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

66.01.02.04 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.04a Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.05 Magnesiogedrite? (Mg,Fe)5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.06 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.07 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.07a Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.08 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.09 Magnesioholmquistite Li2(Mg,Fe)3Al2Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.10 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

66.01.02.11 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

Strunz Class:

09.DE.05 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family

09.DE.05 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m

09.DE.05 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m

09.DE.05 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m

09.DE.05 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m

09.DE.05 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m

09.DE.05 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

09.DE.05 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m

09.DE.05 Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

09.DE.05 Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m

09.DE.05 Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

09.DE.05 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m

09.DE.05 Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m

09.DE.05 Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

09.DE.05 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m

09.DE.05 Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m

Other Protomangano-ferro-anthophyllite Information

References:

NAME( Am.Min.,Vol.84,p196,1999) PHYS. PROP.(Am.Min.,Vol.84,p196,1999) OPTIC PROP.(Am.Min.,Vol.84,p196,1999)

See Also:

Links to other databases for Protomangano-ferro-anthophyllite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - WWW-MINCRYST

Search for Protomangano-ferro-anthophyllite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Protomangano-ferro-anthophyllite :

Dakota Matrix Minerals Google Search for Protomangano-ferro-anthophyllite
John Betts Fine Minerals Search for Protomangano-ferro-anthophyllite
McDougall Minerals Google Search for Protomangano-ferro-anthophyllite
Weinrich Minerals, Inc. Google Search for Protomangano-ferro-anthophyllite

Ask about Protomangano-ferro-anthophyllite 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 Protomangano-ferro-anthophyllite Specimen Label here :

Protomangano-ferro-anthophyllite

(Mn++,Fe++)2(Fe++,Mg)5(Si4O11)2(OH)2
Dana No: 66.01.02.03b Strunz No: 09.DE.05
Locality:

Notes: