'._('einklappen').'
 

Rickardite

Pictures (1 Images total)

Rickardit
Views (Image: 1585582455): 138
Rickardit  E
Analysed with energy dispersive X-ray spectroscopy EDX

metallische, leicht violette Kristalle von Rickardit, North Star Mine, Mammoth, Tintic District, Juab County, Utah, USA; BB < 1 mm, analysiert mittels REM-EDX

Copyright: Joy Desor
Contribution: openpit 2020-03-30
Locality: North Star Mine / Mammoth / Tintic District / Juab Co. / Utah / USA

Collectors Summary

Color violett, purpurrot
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 3.5
Solubility +++ HNO3
Crystal System orthorhombisch, Pmmn

Chemism

Chem­ical formula

Cu3-xTe2

Empir­ical formula (anal­y­sis)

Cu2.82Te2.04

Chem­ical com­po­si­tion

Kupfer, Tellur

Unit weight: 439.510686 u; Number of atoms in the formula: 4.86

Info

Empirical formula:

Cu2.82Te2.04

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Copper

Cu

40.77

2.82

58.02

63.5463000

179.2005660

Tellurium

Te

59.23

2.04

41.98

127.6030000

260.3101200

Anal­y­sis wt%

Cu : 40.74, Te : 59.21 (Ref: Dana, 7th ed. 1)

Strunz 9th edi­tion incl. updates

2.BA.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
A: mit Kupfer (Cu), Silber (Ag), Gold (Au)
30:Rickardit-Gruppe

Lapis Clas­sifica­tion

II/B.04-020

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
B: Sulfide, Selenide und Telluride mit Verhältnis Metall : S,Se,Te > 1:1
4: Selenide mit Kupfer vorherrschend

Clas­sifica­tion by Hölzel

2.BA.260

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
A: With Cu,Ag,Au
2: Berzelianite-Weissit-Group

Dana 8th edi­tion

02.16.15.01

02: Sulfide Minerals
16: Sulfides - Including Selenides and Tellurides with miscellaneous formulae

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

violett, purpurrot

Streak color

schwarz

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

strak, karmesinrot zu violettgrau

Anisotropism

stark, außergewöhnlich in furigen Orangetönen

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 28.30, 37.20, 32.75
(420) 26.10, 35.50, 30.80
(440) 23.50, 33.20, 28.35
(460) 20.80, 30.50, 25.65
(480) 17.80, 27.50, 22.65
(500) 15.10, 24.80, 19.95
(520) 12.80, 22.30, 17.55
(540) 11.50, 20.30, 15.90
(560) 11.80, 18.90, 15.35
(580) 14.50, 18.20, 16.35
(600) 19.60, 18.40, 19.00
(620) 26.00, 19.40, 22.70
(640) 32.70, 21.00, 26.85
(660) 38.60, 23.30, 30.95
(680) 43.90, 26.00, 34.95
(700) 48.10, 28.60, 38.35

Reflection chart Rickardite

Reflec­tiv­ity Ø

24.88

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

59

Space Group

Pmmn

Cell param­e­ters a (Å)

3.98

Cell param­e­ters b (Å)

3.98

Cell param­e­ters c (Å)

6.12

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

1.538

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

1

Volumne (ų)

96.943

X-Ray Pow­der Diffrac­tion

6.12(50),
3.348(90),
3.336(100),
3.058(80),
2.562(60),
2.073(100),
2.038(80),
1.989(40)

XRD chart Rickardite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3.5

VHN (Hard­ness Vick­ers)

79 (50g)

Density (g/cm³)

7.54

7.528 ( ρ calc. Mineralienatlas )

Tenac­ity

spröde

Insta­bil­ity

+++ HNO3

(Co-)Type locality

(Co-)Type locality

USA/Colorado/Gunnison Co./Vulcan District/Good Hope Mine

Type mate­r­ial

National Museum of Natural History, Washington, D.C., USA

Col­lec­tion number of type mate­r­ial

114590

Preface

Occurrences

In tellurreichen, subvulkanischen Erzgängen.

Rare­ness

sehr selten

Name from

Thomas Arthur Rickard (1864–1953), Mineningenieur und Editor des Engineering and Mining Journal, New York and London.

Author (Name, Year)

Ford, 1903

References

Acta Crystallographica B49 (1993), 398

American Journal of Science 15 (1903), 69

American Mineralogist 34 (1949), 441

Mineralogical Journal (Japan) 7 (1973), 252.

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Weissite

Cu2-xTe {x ≈ 0.21}

hexagonal : 6/mmm : P6/mmm

2.BA.30

Rickardite

Cu3-xTe2

orthorhombisch : mmm : Pmmn

2.BA.30

'Argentite' (Var.v. Acanthite)

ß-Ag2S

kubisch : m3m : Im3m

2.BA.30a

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Weissite

Cu2-xTe {x ≈ 0.21}

hexagonal : 6/mmm : P6/mmm

II/B.04-010

Rickardite

Cu3-xTe2

orthorhombisch : mmm : Pmmn

II/B.04-020

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Berzelianite

Cu2Se

kubisch : m3m : Fm3m

2.BA.200

Bellidoite

Cu2Se

tetragonal : 4/m, : P42/n,

2.BA.210

Umangite

Cu3Se2

tetragonal : 42m : P421m

2.BA.220

Athabascaite

Cu5Se4

2.BA.230

Weissite

Cu2-xTe {x ≈ 0.21}

hexagonal : 6/mmm : P6/mmm

2.BA.250

Rickardite

Cu3-xTe2

orthorhombisch : mmm : Pmmn

2.BA.260

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Sopcheite

Ag4Pd3Te4

orthorhombisch : mmm : Cmca

02.16.10.01

Chrisstanleyite

Ag2Pd3Se4

monoklin : 2/m : P21/c

02.16.10.02

Jagüéite

Cu2Pd3Se4

monoklin : 2/m : P21/c

02.16.10.03

Henryite

Cu4Ag3Te4

02.16.11.01

Furutobeite

(Cu,Ag)6PbS4

monoklin : 2, m, 2/m : C2, Cm, C2/m

02.16.12.01

Schlemaite

(Cu,Ag)6(Pb,Bi)Se4

monoklin : 2/m : P21/m

02.16.12.02

Stützite

Ag5-xTe3 {x = 0.24-0.36}

hexagonal : 6m2 : P62m

02.16.13.01

Gortdrumite

Cu18FeHg6S16

02.16.14.01

Rickardite

Cu3-xTe2

orthorhombisch : mmm : Pmmn

02.16.15.01

Oosterboschite

(Pd,Cu)7Se5

02.16.15.02

Maucherite

Ni11As8

tetragonal : 422, 422 : P41212, P43212

02.16.16.01

Athabascaite

Cu5Se4

02.16.17.01

Penzhinite

(Ag,Cu)4Au(S,Se)4

hexagonal : 622 : P6322

02.16.18.01

Palladseite

Pd17Se15

kubisch : m3m : Pm3m

02.16.19.01

'Miassite'

Rh17S15

kubisch : m3m : Pm3m

02.16.19.02

Other languages

German

Rickardit

Spanish

Rickardita

French

Rickardite

English

Rickardite

Russian

Рикардит

Simplified Chinese

碲铜矿

Japanese

リカルド鉱

Alternative Name

Simplified Chinese

铜碲矿

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Rickardit
Google-Bilder-Suche - search for: Rickardit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Rickardit

English pages

Mindat - search for: Rickardite
Webmineral - search for:Rickardite
Handbook-of-Mineralogy - search for: Rickardite
RRUFF - Raman, XRD and other mineral data - search for: Rickardite
RRUFF - References and PDF downloads - search for: Rickardite
American-Mineralogist-Crystal-Structure-Database - search for: Rickardite
Athena - search for: Rickardite

Russian pages

Webmineral.ru - search for: Рикардит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Rickardit
Crystal-Treasure.com - search for: Rickardit
Bosse - search for: Rickardit

Locations with GPS information