http://www.spessartit.de/walldorf.html
https://www.mineral-bosse.de
https://www.mineraliengrosshandel.com
https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
'._('einklappen').'
 

Alpersite (Alpersit)

Pictures (1 Images total)

Alpersit
Views (File:
1592750963
): 455
Alpersit
hellblaue Aggregate von Alpersit, Big Mike Mine, Pershing County, Nevada, USA; BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: USA/Nevada/Pershing Co./Tobin und Sonoma Range District/Big Mike mine
Mineral: Alpersite
Image: 1592750963
License: Usage for Mineralienatlas project only
Alpersit

hellblaue Aggregate von Alpersit, Big Mike Mine, Pershing County, Nevada, USA; BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-06-21
Locality: Big Mike mine / Tobin und Sonoma Range District / Pershing Co. / Nevada / USA

Collectors Summary

Color türkisblau bis tielfblau
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 2.5
Cleavages gut (001)
Fracture uneben
Solubility stabil bei einer Luftfeuchte von über 60%, formt das Pentahydrat
Crystal System monoklin, P21/c

Chemism

Chemical formula

(Mg)SO4·7H2O

Chemical composition

Magnesium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 246.475548 u; Number of atoms in the formula: 27

Info

Empirical formula:

(Mg)SO4·7H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

5.73

14

51.85

1.0079470

14.1112580
Oxygen

O

71.40

11

40.74

15.9994300

175.9937300
Magnesium

Mg

9.86

1

3.70

24.3050600

24.3050600
Sulfur

S

13.01

1

3.70

32.0655000

32.0655000

Strunz 9th edition incl. updates

7.CB.35

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
35:Melanterit-Gruppe

Lapis Classification

VI/C.06-005

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
6: Mittelgroße Kationen; Melanterit-Gruppe

Classification by Hölzel

7.CB.405

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
B: Vitriol-Group, Mg,Fe,Co,Ni,Mn,Cu,Zn-Sulfates with 4 to 7 Water
4: Epsomite-Group

Dana 8th edition

29.06.10.06

29: Hydrated Acid and Sulfates
06: Hydrated Acid and Sulfates where A XO4 · x(H2O)
10: Melanterite Group (Heptahydrates, Monoclinic: P21/c)

IMA status

anerkannt 2003

Mineral status

anerkanntes Mineral

Optical Properties

Color

türkisblau bis tielfblau

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.007
Birefringence chart\! Alpersite title=Birefringence chart Alpersite

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

1.462

RI value β

1.465

RI value γ / ε

1.469

Ri mean

1.465

2V angle

Biaxial (+) 80°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

14.166

Cell parameters b (Å)

6.534

Cell parameters c (Å)

10.838

Cell parameters a/b or c/a

2.168

Cell parameters c/b

1.659

Cell parameters α

90°

Cell parameters β

105.92

Cell parameters γ

90°

Z

4

Volumne (ų)

964.696

X-Ray Powder Diffraction

4.85(100), 4.79(14), 4.44(16), 3.779(38), 3.663(15), 3.254(15), 3.078(14), 2.721(14)
XRD chart Alpersite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.82

1.697 ( ρ calc. Mineralienatlas )

Cleavages

gut (001)

Fracture

uneben

Instability

stabil bei einer Luftfeuchte von über 60%, formt das Pentahydrat

(Co-)Type locality

(Co-)Type locality

USA/Nevada/Pershing Co./Tobin und Sonoma Range District/Big Mike mine

Preface

Author (Name, Year)

Peterson & Hammarstrom & Seal, 2006

References

American Mineralogist 91 (2006), 261

CNMNC Newsletter No. 50; Mineralogical Magazine, 31 [Formel]

Other languages

German

Alpersit

English

Alpersite

Russian

Алперсит

Russian

Альперсит

CNMNC (IMA)-Number

IMA 2003-040

CNMNC symbol

Symbol

Aps

Locations with GPS information