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Alamosite (Alamosit)

Pictures (3 Images total)

Alamosit
Views (File:
1182808195
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Alamosit
Bildbreite: 3 mm; Fundort Lucky Cuss Mine, Tombstone, Tombstone District, Cochise Co., Arizona, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Arizona/Cochise Co./Tombstone District/Tombstone/Lucky Cuss Mine
Mineral: Alamosite
Image: 1182808195
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Alamosit

Bildbreite: 3 mm; Fundort Lucky Cuss Mine, Tombstone, Tombstone District, Cochise Co., Arizona, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2007-06-25
Locality: Lucky Cuss Mine / Tombstone / Tombstone District / Cochise Co. / Arizona / USA
Alamosit, Melanotekit, Leadhillit
Views (File:
1282490763
): 3261
Alamosit, Melanotekit, Leadhillit
Alamosit (weiß) neben Melanotekit (schwarz) und farblosem Leadhillit. Größe: 3,5 x 2,5 x 1,5 cm, Fundort: Tsumeb Mine, Tsumeb, Region Oshikoto, Namibia
Copyright: Rob Lavinsky; Contribution: thdun5
Location: Namibia/Oshikoto (Otjikoto), Region/Tsumeb/Tsumeb Mine
Mineral: Alamosite, Leadhillite, Melanotekite
Image: 1282490763
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Alamosit, Melanotekit, Leadhillit

Alamosit (weiß) neben Melanotekit (schwarz) und farblosem Leadhillit. Größe: 3,5 x 2,5 x 1,5 cm, Fundort: Tsumeb Mine, Tsumeb, Region Oshikoto, Namibia

Copyright: Rob Lavinsky
Contribution: thdun5 2010-08-22
Locality: Tsumeb Mine / Tsumeb / Oshikoto (Otjikoto), Region / Namibia
Alamosit
Views (File:
1469976174
): 711
Alamosit
von der Rawhide Mine, Artillery Peak, Mohave Co. Arizona, USA; derb eingewachsen blaßlila; BB = 7,5 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A002509, Donator: Klaus Fleck
Location: USA/Arizona/Mohave Co./Artillery Peak/Rawhide Wash/Rawhide Mine
Mineral: Alamosite
Image: 1469976174
License: Usage for Mineralienatlas project only
Alamosit (SNr: A002509)

von der Rawhide Mine, Artillery Peak, Mohave Co. Arizona, USA; derb eingewachsen blaßlila; BB = 7,5 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-07-31
Locality: Rawhide Mine / Rawhide Wash / Artillery Peak / Mohave Co. / Arizona / USA

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 4.5
Solubility +++ HNO3
Crystal System monoklin, P2/c

Chemism

Chemical formula

PbSiO3

Chemical composition

Blei, Silicium, Sauerstoff

Unit weight: 283.29382 u; Number of atoms in the formula: 5

Info

Empirical formula:

PbSiO3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

16.94

3

60.00

15.9994300

47.9982900

Silicon

Si

9.91

1

20.00

28.0855300

28.0855300

Lead

Pb

73.14

1

20.00

207.2100000

207.2100000

Analysis wt%

SiO2 : 21.11, PbO : 78.13 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) 75)

Strunz 9th edition incl. updates

9.DO.20

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
O: Ketten- und Bandsilikate mit 7-,8-,10-,12-und 14-periodischen Ketten
20:Alamosit-Gruppe

Lapis Classification

VIII/F.32-010

VIII: SILIKATE
F: Ketten- und Bandsilikate
32: Zwölferketten [Si12O36] 24-

Classification by Hölzel

9.DR.100

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
R: ~[Si12O36]24--...12-Chain Alamosite-Group

Dana 8th edition

65.07.01.01

65: Inosilicate Minerals
07: Inosilicates Inosilicate Single-Width Unbranched Chains, W=1 with chains P>7

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.021

Birefringence chart\! Alamosite title=Birefringence chart Alamosite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.947

RI value β

1.961

RI value γ / ε

1.968

Ri mean

1.959

2V angle

Biaxial (-) 65°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

13

Space Group

P2/c

Cell parameters a (Å)

11.209

Cell parameters b (Å)

7.041

Cell parameters c (Å)

12.220

Cell parameters a/b or c/a

1.592

Cell parameters c/b

1.736

Cell parameters α

90°

Cell parameters β

113.2

Cell parameters γ

90°

Z

12

Volume (ų)

886.445

X-Ray Powder Diffraction

3.56(90),
3.53(70),
3.34(100),
3.25(60),
3.23(70),
2.987(70),
2.815(60),
2.300(70)

XRD chart Alamosite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.49

6.368 ( ρ calc. Mineralienatlas )

Instability

+++ HNO3

(Co-)Type locality

(Co-)Type locality

Mexiko/Sonora/Alamos, Municipio/Alamos

Preface

Author (Name, Year)

Palache & Merwin, 1909

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H302: Gesundheitsschädlich bei Verschlucken., H332: Gesundheitsschädlich bei Einatmen., H360Df: Kann das Kind im Mutterleib schädigen. Kann vermutlich die Fruchtbarkeit beeinträchtigen., H373: Kann die Organe schädigen bei längerer oder wiederholter Exposition., H410: Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 12

Other languages

German

Alamosit

Spanish

Alamosita

English

Alamosite

French

Alamosite

Russian

Аламозит

CNMNC symbol

Symbol

Aam

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 2SjV6iI2SEGJ5azn43vdLg
GUID (Global unique identifier) EAD528D9-3622-4148-89E5-ACE7E37BDD2E
Database ID 48