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Choloalite

Pictures (2 Images total)

Choloalit
Views (File:
1196854959
): 1734
Choloalit
Fundort: Bambolla Mine, Moctezuma, Sonora, Mexiko; Bildbreite: ca. 1.5 mm
Copyright: Christian Rewitzer; Contribution: Klinoklas
Location: Mexiko/Sonora/Moctezuma, Municipio/Moctezuma/Moctezuma (Bambolla, Bamboya) Mine
Mineral: Choloalite
Image: 1196854959
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Choloalit

Fundort: Bambolla Mine, Moctezuma, Sonora, Mexiko; Bildbreite: ca. 1.5 mm

Copyright: Christian Rewitzer
Contribution: Klinoklas 2007-12-05
Locality: Moctezuma (Bambolla, Bamboya) Mine / Moctezuma / Moctezuma, Municipio / Sonora / Mexiko
Choloalite
Views (File:
1435631433
): 616
Choloalite
Octahedral cyrstal of choloalite associated with emmonsite, telllurium and tellurite. FOV 3mm. I collected this specimen in 2-99; Moctezuma Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Copyright: Brent Thorne; Contribution: Stefan
Collection: Brent Thorne
Location: Mexiko/Sonora/Moctezuma, Municipio/Moctezuma/Moctezuma (Bambolla, Bamboya) Mine
Mineral: Choloalite
Image: 1435631433
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Choloalite

Octahedral cyrstal of choloalite associated with emmonsite, telllurium and tellurite. FOV 3mm. I collected this specimen in 2-99; Moctezuma Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico

Collection: Brent Thorne
Copyright: Brent Thorne
Contribution: Stefan 2015-06-30
Locality: Moctezuma (Bambolla, Bamboya) Mine / Moctezuma / Moctezuma, Municipio / Sonora / Mexiko

Collectors Summary

Hardness (Mohs) 3
Solubility +++ HCl, HNO3
Crystal System kubisch, P4132

Chemism

Chemical formula

(Pb,Ca)3(Cu,Sb)3Te6O18Cl

Chemical composition

Antimon, Blei, Calcium, Chlor, Kupfer, Tellur, Sauerstoff

Unit weight: 1819.64149 u; Number of atoms in the formula: 31

Info

Empirical formula:

(Pb0.75Ca0.25)3(Cu0.75Sb0.25)3Te6O18Cl

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

15.83

18

58.06

15.9994300

287.9897400

Chlorine

Cl

1.95

1

3.23

35.4532000

35.4532000

Calcium

Ca

1.65

0.75

2.42

40.0784000

30.0588000

Copper

Cu

7.86

2.25

7.26

63.5463000

142.9791750

Antimony

Sb

5.02

0.75

2.42

121.7601000

91.3200750

Tellurium

Te

42.08

6

19.35

127.6030000

765.6180000

Lead

Pb

25.62

2.25

7.26

207.2100000

466.2225000

Analysis wt%

CaO : 0.50, PbO : 31.22, CuO : 11.81, Sb2O5 : 1.10, TeO2 : 51.81, Cl : 1.19 (Ref: Canadian Mineralogist 99)

Strunz 9th edition incl. updates

4.JK.45

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
J: Antimonite, Bismuthite, Sulfite, Selenite, Tellurite
K: Tellurite ohne zusätzliche [Anionen], ohne H20
45:Choloalit-Gruppe

Lapis Classification

IV/K.02-050

IV: OXIDE
K: Sulfite, Selenite, Tellurite
2: Sulfite, Selenite, Tellurite mit Baugruppen [XO3] 2- und verwandte Strukturen

Classification by Hölzel

5.MB.240

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
M: Tellurites
B: Tellurites (+Anions -Water)

Dana 8th edition

34.02.04.01

34: Selenites - Tellurites - Sulfites
02: Selenites - Tellurites - Sulfites as A++ XO3 · x(H2O)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

RI value α / ω / n

2.04

Ri mean

2.04

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

432

Space Group number

213

Space Group

P4132

Cell parameters a (Å)

12.520

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

1962.515

X-Ray Powder Diffraction

7.223(50),
4.170(20),
3.614(30),
3.472(40),
3.343(60),
3.036(100),
2.952(30),
2.454(50)

XRD chart Choloalite

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

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

6.4 (gemessen)

6.158 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, HNO3

Preface

Name from

1) dem Wort Choloa der Nahua (Ureinwohner Mexikos und El Salvadors) für „ausweichend“ in Anspielung auf die Tatsache, dass das Mineral viele Jahre lang nicht entdeckt wurde

2) dem griechischen Wort lithos für „Stein“

Author (Name, Year)

Williams, 1981

References

Mineralogical Magazine 44 (1981), 55

Other languages

Spanish

Choloalita

French

Choloalite

English

Choloalite

German

Choloalith

Russian

Чолоалит

CNMNC (IMA)-Number

IMA 1980-019

CNMNC symbol

Symbol

Cho

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 9oA3v-ONykCywkTQNanTDw
GUID (Global unique identifier) BF3780F6-8DE3-40CA-B2C2-44D035A9D30F
Database ID 737