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Karupmøllerite-Ca (Karupmollerite-Ca)

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Karupmøllerit-Ca
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Karupmøllerit-Ca
weißes Aggregat von Karupmøllerit-Ca, Mellemelv Tal, Kangerluarsuk Fjord, Ilímaussaq, Narsaq, Kujalleq, Grönland; BB < 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Grönland/Kommune Kujalleq/Narsaq/Ilimaussaq-Komplex/Kangerdluarssuq/Lilleelv/Mellemelv
Mineral: Karupmøllerite-Ca
Image: 1596041624
License: Usage for Mineralienatlas project only
Karupmøllerit-Ca

weißes Aggregat von Karupmøllerit-Ca, Mellemelv Tal, Kangerluarsuk Fjord, Ilímaussaq, Narsaq, Kujalleq, Grönland; BB < 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-07-29
Locality: Mellemelv / Lilleelv / Kangerdluarssuq / Ilimaussaq-Komplex / Narsaq / Kommune Kujalleq / Grönland

Collectors Summary

Color braun, braun, rose, gelb, bräunlich
Streak color hellrosa
Lustre Glasglanz, matt
Hardness (Mohs) 5
Cleavages keine
Crystal System monoklin, C2/m
Morphology Pseudomorphosen zu 2 x 1,5 x 0,1 cm nach Lamellen von Epistolit, Vuonnemit ersetzend

Chemism

Chemical formula

(Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·7H2O

Chemical composition

Calcium, Natrium, Niob, Silicium, Titan, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1225.90256724 u; Number of atoms in the formula: 65

Info

Empirical formula:

(Na0.6Ca0.3K0.1)2Ca(Nb0.75Ti0.25)4(Si4O12)2(O0.75(OH)0.25)4·7H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.23

15

23.08

1.0079470

15.1192050
Oxygen

O

45.68

35

53.85

15.9994300

559.9800500
Sodium

Na

2.25

1.2

1.85

22.9897702

27.5877242
Silicon

Si

18.33

8

12.31

28.0855300

224.6842400
Potassium

K

0.64

0.2

0.31

39.0983100

7.8196620
Calcium

Ca

5.23

1.6

2.46

40.0784000

64.1254400
Titanium

Ti

3.90

1

1.54

47.8671000

47.8671000
Niobium

Nb

22.74

3

4.62

92.9063820

278.7191460

Analysis wt%

SiO2 : 39.85, Nb2O5 : 29.92, TiO2 : 8.51, Fe2O3 : 0.47, CaO : 6.00, Na2O : 2.17, K2O : 1.74, H2O : 11.31 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) 2002)

Strunz 9th edition incl. updates

9.CE.30

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
E: [Si4O12]8- vierer-Einfachringe, ohne inselartige komplexe [Anionen]
30:Labuntsovit-Gruppe

Lapis Classification

VIII/E.07-090

VIII: SILIKATE
E: Ringsilikate
7: Viererringe [Si4O12] 8-; Labuntsovit-Gruppe

Classification by Hölzel

9.CB.590

9: SILICATES
C: Cyclosilicates
B: ~[Si4O12]8-, ~[Si4O10]4--Rings
5: Labuntsovite-Subgroup - Monoclinic, c=~~8

Dana 8th edition

60.01.03c.03

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates
03c: Labuntsovite Group (Kuzmenkoite subgroup Monoclinic [C2/m])

IMA status

anerkannt 2001

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Labuntsovite supergroup  ⇒ Kuzmenkoite group

Optical Properties

Color

braun, braun, rose, gelb, bräunlich

Streak color

hellrosa

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz, matt

max. Birefringence

0.099
Birefringence chart\! Karupmøllerite-Ca title=Birefringence chart Karupmøllerite-Ca

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

1.656

RI value β

1.662

RI value γ / ε

1.755

Ri mean

1.691

2V angle

Biaxial (+) 30° ± 15 (gemessen) 29.7° (berechnet)

Pleochroism

keiner

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

14.641

Cell parameters b (Å)

14.214

Cell parameters c (Å)

7.915

Cell parameters a/b or c/a

1.030

Cell parameters c/b

0.557

Cell parameters α

90°

Cell parameters β

117.37

Cell parameters γ

90°

Z

2

Volumne (ų)

1462.778

Kristall structure

a = 14.64Å, b = 14.21Å, c = 7.91Å

X-Ray Powder Diffraction

7.10(70),
7.03(100),
6.48(40),
5.00(70),
3.253(40),
3.171(60),
3.150(40)
XRD chart Karupmøllerite-Ca

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

Morphology

Pseudomorphosen zu 2 x 1,5 x 0,1 cm nach Lamellen von Epistolit, Vuonnemit ersetzend

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.86 (gemessen) 2.74 (berechnet)

2.783 ( ρ calc. Mineralienatlas )

Cleavages

keine

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Grönland/Kommune Kujalleq/Narsaq/Ilimaussaq-Komplex/Kangerdluarssuq/Lilleelv/Mellemelv

Preface

Associations

Aegirin, Albit, Arfvedsonit, Carbonat-Fluor-Apatit, Eudialyt, Lueshit, Natrolith, Kali-Feldspat, Sodalith, Tuperssuatsiait

Name from

S. Karup-Møller, dänischer Mineraloge der das Mineral entdeckte

Author (Name, Year)

Pekov & Chukanov & Petersen & Zadov & Yamnova & Kabalov & Schneider, 2

References

Neues Jahrbuch für Mineralogie, Monatshefte (2002), 433-444.

European Journal of Mineralogy 14, 165-173.

American Mineralogist 88 (2003), 932.

Lapis 1 (2003), 50.

IMA group assignments

Other languages

German

Karupmøllerit-Ca

Spanish

Karupmøllerita-Ca

English

Karupmøllerite-Ca

French

Karupmøllerite-Ca

Russian

Карупмёллерит-Ca

Traditional Chinese

矽鹼鈣鈦鈮石

Simplified Chinese

硅碱钙钛铌石

Alternative Name

English

Karupmollerite-Ca

Karupmöllerit-Ca

CNMNC (IMA)-Number

IMA 2001-028

CNMNC symbol

Symbol

Kmø-Ca

Locations with GPS information