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Surinamite

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Surinamit
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Surinamit
bläuliches Aggregat von Surinamit, Christmas Point Pegmatit, Khmarabucht, Caseybucht, Enderbyland, Ostantarktis; BB ~ 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Antarktika/Ostantarktis/Enderbyland/Caseybucht/Khmarabucht/Christmas-Point-Pegmatit
Mineral: Surinamite
Image: 1585231355
License: Usage for Mineralienatlas project only
Surinamit

bläuliches Aggregat von Surinamit, Christmas Point Pegmatit, Khmarabucht, Caseybucht, Enderbyland, Ostantarktis; BB 2 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-26
Locality: Christmas-Point-Pegmatit / Khmarabucht / Caseybucht / Enderbyland / Ostantarktis / Antarktika

Collectors Summary

Color blau, blaugrün
Streak color weiß
Crystal System monoklin, P2/n

Chemism

Chemical formula

(Mg,Fe3+)3(Al,Fe3+)3[O|AlBeSi3O15]

Chemical composition

Aluminium, Beryllium, Eisen, Magnesium, Silicium, Sauerstoff

Unit weight: 575.40383645 u; Number of atoms in the formula: 27

Info

Empirical formula:

(Mg0.75Fe0.25)3(Al0.75Fe0.25)3[OAlBeSi3O15]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Beryllium

Be

1.57

1

3.70

9.0121823

9.0121823

Oxygen

O

44.49

16

59.26

15.9994300

255.9908800

Magnesium

Mg

9.50

2.25

8.33

24.3050600

54.6863850

Aluminium

Al

15.24

3.25

12.04

26.9815382

87.6899992

Silicon

Si

14.64

3

11.11

28.0855300

84.2565900

Iron

Fe

14.56

1.5

5.56

55.8452000

83.7678000

Strunz 9th edition incl. updates

9.DH.55

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
H: Ketten- und Bandsilikate mit 4-periodischen Einfachketten, Si4O12
55:Surinamit-Gruppe

Lapis Classification

VIII/F.15-020

VIII: SILIKATE
F: Ketten- und Bandsilikate
15: Verzweigte Kettenstrukturen

Classification by Hölzel

9.DK.440

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
K: With branched chains - Sapphirine-Supergroup
4: Joesmithite-Group

Dana 8th edition

69.02.01b.02

69: Inosilicates Inosilicate Chains with Side Branches or Loops
02: Inosilicates Inosilicate Chains with Side Branches or Loops with P>2
01b: Aenigmatite and related species (Sapphirine subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Sapphirine supergroup  ⇒ Surinamite group

Optical Properties

Color

blau, blaugrün

Streak color

weiß

max. Birefringence

0.008

Birefringence chart\! Surinamite title=Birefringence chart Surinamite

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

1.738

RI value β

1.743

RI value γ / ε

1.746

Ri mean

1.742

2V angle

Biaxial (-) 68°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

13

Space Group

P2/n

Cell parameters a (Å)

9.916

Cell parameters b (Å)

11.384

Cell parameters c (Å)

9.631

Cell parameters a/b or c/a

0.871

Cell parameters c/b

0.846

Cell parameters α

90°

Cell parameters β

109.30

Cell parameters γ

90°

Z

4

Volumne (ų)

1026.085

X-Ray Powder Diffraction

7.05(50),
2.91(50),
2.435(100),
1.432(50),
1.420(80),
1.411(50),
0.816(50),
0.801(50)

XRD chart Surinamite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.58 (berechnet)

3.725 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Surinam/Sipaliwini, Distrikt/Bakhuis-Gebirge

Preface

Author (Name, Year)

de Roever & Kieft & Murray & Klein & Drucker, 1976

References

American Mineralogist 61 (1976), 193

IMA group assignments



 
 
 
(Mg,Fe3+)3(Al,Fe3+)3[O|AlBeSi3O15]
monoklin
P2/n

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Actuality: 21. Nov 2022 - 13:36:41

Other languages

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Surinamite

Russian

Суринамит

CNMNC (IMA)-Number

IMA 1974-053

CNMNC symbol

Symbol

Sum

Locations with GPS information