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Qaqarssukite-(Ce) (IMA 2004-019)

Pictures (1 Images total)

Qaqarssukit-(Ce)
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Qaqarssukit-(Ce)
tafliger, dunkelolivgrüner Kristall von Qaqarssukit-(Ce), Qaqqaarsuk, Maniitsoq, Grönland; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Grönland/Qeqqata Kommunia/Maniitsoq (Sukkertoppen)/Qaqqaarsuk (Qaqarssuk)
Mineral: Qaqarssukite-(Ce)
Image: 1583082051
License: Usage for Mineralienatlas project only
Qaqarssukit-(Ce)

tafliger, dunkelolivgrüner Kristall von Qaqarssukit-(Ce), Qaqqaarsuk, Maniitsoq, Grönland; BB < 1 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-01
Locality: Qaqqaarsuk (Qaqarssuk) / Maniitsoq (Sukkertoppen) / Qeqqata Kommunia / Grönland

Collectors Summary

Hardness (Mohs) 3.5
Cleavages keine
Fracture uneben
Crystal System trigonal, P3c1

Chemism

Chemical formula

Ba(Ce,REE)(CO3)2F

Additional chem. information

Polymorph von Huanghoit-(Ce)

Chemical composition

Barium, Cerium, Fluor, Kohlenstoff, Sauerstoff, REE

Unit weight: 417.43131825 u; Number of atoms in the formula: 11

Info

Empirical formula:

Ba(Ce0.75REE0.25)(CO3)2F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Carbon

C

5.75

2

18.18

12.0107800

24.0215600

Oxygen

O

23.00

6

54.55

15.9994300

95.9965800

Fluorine

F

4.55

1

9.09

18.9984033

18.9984033

Barium

Ba

32.90

1

9.09

137.3277000

137.3277000

Cerium

Ce

25.17

0.75

6.82

140.1161000

105.0870750

Rare Earth

REE

8.62

0.25

2.27

144.0000000

36.0000000

Analysis wt%

CO2 : 23.00, TiO2 : 1.41, La2O3 : 8.82, Ce2O3 : 20.26, Pr2O3 : 1.85, Nd2O3 : 6.64, CaO : 2.82, SrO : 3.92, BaO : 27.41, F : 5.04, Ln2O3 : 38.12 (Ref: Canadian Mineralogist 2006)

Strunz 9th edition incl. updates

5.BD.25

5: Carbonate (Carbonate, Nitrate)
B: Carbonate mit weitere Anionen, ohne H2O
D: Mit Selten-Erden-Elementen (REE)
25:Huanghoit

Lapis Classification

V/C.07-140

V: NITRATE, CARBONATE UND BORATE
C: Wasserfreie Carbonate, mit fremden Anionen
7: Bastnäsit-Gruppe

Classification by Hölzel

5.BD.420

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
B: Carbonates (+Anions -Water)
D: Carbonates with Rare Earth Elements
4: F/CO3 =0.5 Synchysite-Group

Dana 8th edition

16a.01.04.02

16a: Carbonates - Hydroxyl or Halogen
01: Carbonates - Hydroxyl or Halogen in the Bastnasite/Shynchysite/Parasite Groups

IMA status

anerkannt 2004

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.079

Birefringence chart\! Qaqarssukite-(Ce) title=Birefringence chart Qaqarssukite-(Ce)

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

1.672

RI value γ / ε

1.751

Ri mean

1.698

2V angle

Uniaxial (+)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

158

Space Group

P3c1

Cell parameters a (Å)

7.204

Cell parameters b (Å)

-

Cell parameters c (Å)

18.172

Cell parameters a/b or c/a

2.522

Cell parameters c/b

-

Z

6

Volume (ų)

816.734

X-Ray Powder Diffraction

4.552(43), 3.674(32), 3.539(41), 3.351(100), 3.096(40), 2.571(35), 2.109(39), 2.080(60)

XRD chart Qaqarssukite-(Ce)

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)

3.5

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.64 (berechnet)

5.092 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

Preface

Author (Name, Year)

Grice & Gault & Rowe & Johnsen, 2006

References

Canadian Mineralogist 44 (2006), 1137

Other languages

German

Qaqarssukit-(Ce)

English

Qaqarssukite-(Ce)

CNMNC (IMA)-Number

IMA 2004-019

CNMNC symbol

Symbol

Qq-Ce

IDs

GUSID (Global unique identifier short form) 3UwhbuVzIkyuTbq-s2UUYQ
GUID (Global unique identifier) 6E214CDD-73E5-4C22-AE4D-BABEB3651461
Database ID 4364