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

Samuelsonite (Samuelsonit)

Pictures (1 Images total)

Samuelsonit
Views (File:
1591973695
): 274
Samuelsonit
brauner Einzelkristall von Samuelsonit, Palermo 1 Mine, Grafton County, New Hampshire, USA; BB ~ 4 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: USA/New Hampshire/Grafton Co./North Groton/Palermo No. 1 Mine
Mineral: Samuelsonite
Image: 1591973695
License: Usage for Mineralienatlas project only
Samuelsonit

brauner Einzelkristall von Samuelsonit, Palermo 1 Mine, Grafton County, New Hampshire, USA; BB 4 mm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-06-12
Locality: Palermo No. 1 Mine / North Groton / Grafton Co. / New Hampshire / USA

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 5
Solubility +++ Säuren
Crystal System monoklin, C2/m

Chemism

Chemical formula

(Ca,Ba)Ca8(Fe2+,Mn)4Al2(PO4)10(OH)2

Chemical composition

Aluminium, Barium, Calcium, Eisen, Mangan, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 1645.1842173 u; Number of atoms in the formula: 69

Info

Empirical formula:

(Ca0.75Ba0.25)Ca8(Fe0.75Mn0.25)4Al2(PO4)10(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.12

2

2.90

1.0079470

2.0158940
Oxygen

O

40.85

42

60.87

15.9994300

671.9760600
Aluminium

Al

3.28

2

2.90

26.9815382

53.9630764
Phosphorus

P

18.83

10

14.49

30.9737612

309.7376120
Calcium

Ca

21.32

8.75

12.68

40.0784000

350.6860000
Manganese

Mn

3.34

1

1.45

54.9380499

54.9380499
Iron

Fe

10.18

3

4.35

55.8452000

167.5356000
Barium

Ba

2.09

0.25

0.36

137.3277000

34.3319250

Analysis wt%

BaO : 2.04, SrO : 0.44, CaO : 28.30, MnO : 7.20, FeO : 11.30, Al2O3 : 4.80, P2O5 : 43.10, H2O : 3.00 (Ref: American Mineralogist 75)

Strunz 9th edition incl. updates

8.BF.10

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
F: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 < 0.5:1
10:Samuelsonit-Gruppe

Lapis Classification

VII/B.20-100

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
20: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb

Classification by Hölzel

8.BM.140

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
M: Phosphates, very large: 2, Vmed: 2,3
1: very large: 2, Vmed: 2+3 Kulanite-Group

Dana 8th edition

41.10.08.01

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
10: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A++ B++)3 (XO4)2 Zq

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.010
Birefringence chart\! Samuelsonite title=Birefringence chart Samuelsonite

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

1.645

RI value β

1.650

RI value γ / ε

1.655

Ri mean

1.650

2V angle

Biaxial (+) 75°!

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

18.495

Cell parameters b (Å)

6.805

Cell parameters c (Å)

14.000

Cell parameters a/b or c/a

2.718

Cell parameters c/b

2.057

Cell parameters α

90°

Cell parameters β

112.75

Cell parameters γ

90°

Z

2

Volumne (ų)

1624.935

X-Ray Powder Diffraction

3.389(50),
3.245(40),
3.058(100),
3.032(60),
2.734(50),
2.657(70),
2.556(40),
1.706(60)
XRD chart Samuelsonite

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)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.31 (gemessen)

3.362 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

USA/New Hampshire/Grafton Co./North Groton/Palermo No. 1 Mine

Preface

Author (Name, Year)

Moore & Irving & Kampf, 1975

References

American Mineralogist 60 (1975), 957

Other languages

German

Samuelsonit

Spanish

Samuelsonita

English

Samuelsonite

French

Samuelsonite

Russian

Самуэлсонит

CNMNC (IMA)-Number

IMA 1974-026

CNMNC symbol

Symbol

Sms

Locations with GPS information