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Northstarite (Northstarit)

Collectors Summary

Hardness (Mohs) 2
Crystal System hexagonal, P63

Chemism

Chemical formula

Pb6(Te4+O3)5(S6+O3S2-)

Empirical formula (analysis)

Pb5.80Sb3+0.05Te4+5.04S6+1.02S2–1.02O18

Chemical composition

Blei, Tellur, Sauerstoff, Schwefel

Unit weight: 2204.428485 u; Number of atoms in the formula: 30.93

Info

Empirical formula:

Pb5.80Sb0.05Te5.04S1.02S1.02O18

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

13.06

18

58.20

15.9994300

287.9897400

Sulfur

S

2.97

2.04

6.60

32.0655000

65.4136200

Antimony

Sb

0.28

0.05

0.16

121.7601000

6.0880050

Tellurium

Te

29.17

5.04

16.29

127.6030000

643.1191200

Lead

Pb

54.52

5.8

18.75

207.2100000

1,201.8180000

Strunz 9th edition incl. updates

4.J.

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
J: Antimonite, Bismuthite, Sulfite, Selenite, Tellurite

IMA status

anerkannt CNMNC Newsletter No. 51, Aug. 2019

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

hexagonal

Class (H-M)

6

Space Group number

173

Space Group

P63

Cell parameters a (Å)

10.253(1)

Cell parameters b (Å)

-

Cell parameters c (Å)

11.6747(8)

Cell parameters a/b or c/a

1.139

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

1062.865

Crystal structure

Neuer Strukturtyp; Struktur ermittelt

X-Ray Powder Diffraction

5.12(21), 3.098(100), 2.957(74), 2.140(44), 1.940(13), 1.733(41), 1.706(18), 1.626(31)

XRD chart Northstarite

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

Physical Properties

Hardness (Mohs)

2

Density (g/cm³)

6.888 ber.

6.888 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

USA/Utah/Juab Co./Tintic District/Mammoth/North Star Mine

Type material

Das Typenmaterial ist in den mineralogischen Sammlungen des Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, Katalognummer 67291, hinterlegt.

Preface

Author (Name, Year)

Anthony R. Kampf, Robert M. Housley und George R. Rossman (2020)

References

Anthony R. Kampf; Robert M. Housley; George R. Rossman: Northstarite, a new lead-tellurite-thiosulfate mineral from the North Star mine, Tintic, Utah, USA. The Canadian Mineralogist Vol. 58, Nr. 4 (2020) S. 533-542.

Kampf, A.R., Housley, R.M. and Rossman, G.R. (2019) Northstarite, IMA 2019-031. CNMNC Newsletter No. 51; European Journal of Mineralogy, 31, https://doi.org/10.1127/ejm/2019/0031-2894

Other languages

German

Northstarit

English

Northstarite

CNMNC (IMA)-Number

IMA 2019-031

CNMNC symbol

Symbol

Nsr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 7kAmvax9v06UKDo6i-1Epw
GUID (Global unique identifier) BD2640EE-7DAC-4EBF-9428-3A3A8BED44A7
Database ID 8760