Holdenite Mineral Data

General Holdenite Information

Chemical Formula:

(Mn,Mg)6Zn3(AsO4)2(SiO4)(OH)8

Composition:

Molecular Weight = 1,018.89 gm

Magnesium 1.43 % Mg 2.37 % MgO

Manganese 29.66 % Mn 38.29 % MnO

Zinc 19.25 % Zn 23.96 % ZnO

Silicon 2.76 % Si 5.90 % SiO₂

Arsenic 14.71 % As 22.56 % As₂O₅

Hydrogen 0.79 % H 7.07 % H₂O

Oxygen 31.41 % O

______ ______

100.00 % 100.16 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_5.5Mg_0.6Zn₃(AsO₄)₂(SiO₄)(OH)₈

Environment:

Secondary mineral in veinlets and other voids in a metamorphosed zinc deposit.

IMA Status:

Valid Species (Pre-IMA) 1927

Locality:

Franklin and Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Albert Fairchild Holden (1866-1913), mining engineer from Salt Lake City, Utah, USA.

Name Pronunciation:

Holdenite + Pronunciation

Synonym:

ICSD 100075

PDF 29-903

Holdenite Image

Images:

Holdenite

Comments: Pink translucent holdenite vein with red willemite and black franlinite.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Holdenite Crystallography

Axial Ratios:

a:b:c =0.3811:1:0.2764

Cell Dimensions:

a = 11.99, b = 31.46, c = 8.697, Z = 8; V = 3,280.55 Den(Calc)= 4.13

Crystal System:

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

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

By Intensity(I/I_o): 2.838(1), 2.583(0.8), 3.582(0.8),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 2 1 1) ( 1 3 1) ( 0 1 0) ( 1 1 0) ( 7 16 2) ( 1 1 1) ( 1 0 0)

Warning: this large pop-up is very compute intensive and may not work well with some computers.

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

Moore P B , Araki T , American Mineralogist , 62 (1977) p.513-521, Holdenite, a novel cubic close-packed structure, Note: sample is from the zinc mines at Franklin, Sussex County, New Jersey, USA

Physical Properties of Holdenite

Cleavage:

{010} Poor

Color:

Yellowish red, Dark red, Pink, Orange.

Density:

4.11

Diaphaneity:

Translucent

Fracture:

Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

4 - Fluorite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Optical Properties of Holdenite

Gladstone-Dale:

CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1876,KPDmeas= 0.1885,KC= 0.1909
Ncalc = 1.78 - 1.79

Optical Data:

Biaxial (+), a=1.769, b=1.77, g=1.785, bire=0.0160, 2V(Calc)=30, 2V(Meas)=30.33. Dispersion r > v distinct.

Calculated Properties of Holdenite

Electron Density:

Bulk Density (Electron Density)=3.89 gm/cc
note: Specific Gravity of Holdenite =4.11 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Holdenite= 27.65 barns/electron
U=PE_Holdenite x rElectron Density= 107.66 barns/cc.

Radioactivity:

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

Holdenite Classification

Dana Class:

43.04.07.01 (43)Compound Phosphates, etc.

(43.04)(Anhydrous Compound Anions With Hydroxyl or Halogen)

(43.04.07)Dana Group

43.04.07.01 Holdenite (Mn,Mg)6Zn3(AsO4)2(SiO4)(OH)8 Abma 2/m 2/m 2/m

Strunz Class:

08.BE.55 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1

08.BE.55 Holdenite (Mn,Mg)6Zn3(AsO4)2(SiO4)(OH)8 Abma 2/m 2/m 2/m

Other Holdenite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)

See Also:

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

Search for Holdenite using:

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

Visit our Advertisers for Holdenite :

A Bijoux Google Search for Holdenite
Adam's Minerals Google Search for Holdenite
Cape Minerals Google Search for Holdenite
Dakota Matrix Minerals Google Search for Holdenite
Excalibur Mineral Corp. Google Search for Holdenite
Exceptional Minerals Google Search for Holdenite
John Betts Fine Minerals Search for Holdenite
McDougall Minerals Google Search for Holdenite
Mineral News Website Link
Rock and Mineral Shows Google Search for Holdenite
Weinrich Minerals, Inc. Google Search for Holdenite

Ask about Holdenite 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 Holdenite Specimen Label here :

Holdenite

(Mn,Mg)6Zn3(AsO4)2(SiO4)(OH)8
Dana No: 43.04.07.01 Strunz No: 08.BE.55
Locality:

Notes: