Pararsenolamprite Mineral Data

General Pararsenolamprite Information

Chemical Formula:

Composition:

Molecular Weight = 76.51 gm

Antimony 7.96 % Sb

Arsenic 92.04 % As

______

100.00 %

Empirical Formula:

As_0.94Sb_0.05

Environment:

Overgrowths on colloform arsenic found in dump material in a Sb-As-Ag-Au deposit. Trimorphous with arsenic and arsenolamprite..

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Mukuno mone, Yamaga-cho, Oita Prefecture, Kyushy, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for the dimorphous relationship with arsenolamprite.

Synonym:

IMA1999-047

Pararsenolamprite Image

Images:

Pararsenolamprite

Comments: Dark gray metallic pararsenolamprite.
Location: Mukuno mine, Ouita, Japan. Scale: See Image.
© Rruff Database

Pararsenolamprite Crystallography

Axial Ratios:

a:b:c =0.3298:1:1.0115

Cell Dimensions:

a = 3.3633, b = 10.196, c = 10.314, Z = 18; V = 353.69 Den(Calc)= 6.47

Crystal System:

OrthorhombicSpace Group: Pmn2 or P 2₁nm

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

By Intensity(I/I_o): 5.17(1)(002), 3.259(0.58)(013), 2.84(0.27)(032),1.794(0.26), 4.6(0.24)(012), 2.299(0.23)(024), 2.58(0.22)(004),

Physical Properties of Pararsenolamprite

Color:

Lead gray.

Density:

5.88 - 6.01, Average = 5.94

Diaphaneity:

Opaque

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Metallic

Streak:

black

Optical Properties of Pararsenolamprite

RL Anisotrophism:

Strong.

RL Bireflectance:

From creamy to brown, gray, green.

RL Color:

White with a slight greenish blue tint.

RL Pleochroism:

Dark brown and greenish gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Pararsenolamprite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	49.00	44.00
546 nm	47.00	42.10
589 nm	44.80	39.90
650 nm	44.90	40.30

**Standardized Intensity (100%) Reflection Spectra of Pararsenolamprite in Oil**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	33.60	29.30
546 nm	31.50	28.00
589 nm	29.70	26.90
650 nm	29.20	26.00

**Calculated Relative Intensity Colors of Pararsenolamprite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R₁
R₂

**Calculated Relative Intensity Colors of Pararsenolamprite in Oil**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	330%
R₁
R₂

Calculated Properties of Pararsenolamprite

Electron Density:

Bulk Density (Electron Density)=5.68 gm/cc
note: Specific Gravity of Pararsenolamprite =6.47 gm/cc.

Fermion Index:

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_{Pararsenolamprite}= 94.31 barns/electron
U=PE_{Pararsenolamprite} x rElectron Density= 535.42 barns/cc.

Radioactivity:

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

Pararsenolamprite Classification

Dana Class:

01.03.02.02 (01)Native Elements

(01.03)with semi-metallic and non-metallic elements

(01.03.02)Dana Group

01.03.02.01 Arsenolamprite As Bmab 2/m 2/m 2/m

01.03.02.02 Pararsenolamprite! As Pmn2 or P 2₁nm Ortho

Strunz Class:

01.CA.10 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.C - Metalloids and Nonmetals

01.CA -Arsenic group elements

01.CA.10 Arsenolamprite As Bmab 2/m 2/m 2/m

01.CA.10 Pararsenolamprite! As Pmn2 or P 2₁nm Ortho

Other Pararsenolamprite Information

References:

NAME( AmMin, vol 87, p 998) PHYS. PROP.(AmMin, vol 87, p 998) OPTIC PROP.(AmMin, vol 87, p 998)

See Also:

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

Search for Pararsenolamprite using:

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

Visit our Advertisers for Pararsenolamprite :

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

Ask about Pararsenolamprite 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 Pararsenolamprite Specimen Label here :

Pararsenolamprite

As
Dana No: 01.03.02.02 Strunz No: 01.CA.10
Locality:

Notes: