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Paceite

Collectors Summary

Color dunkelblau
Streak color blassblau
Hardness (Mohs) 1.5
Cleavages vollkommen {100} und {110}
Fracture uneben
Solubility +++ H2O
Crystal System tetragonal, I4/m

Chemism

Chemical formula

CaCu[CH3COO]4·6H2O

Chemical composition

Calcium, Kupfer, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 447.893688 u; Number of atoms in the formula: 48

Info

Empirical formula:

CaCu[CH3COO]4·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

5.40

24

50.00

1.0079470

24.1907280
Carbon

C

21.45

8

16.67

12.0107800

96.0862400
Oxygen

O

50.01

14

29.17

15.9994300

223.9920200
Calcium

Ca

8.95

1

2.08

40.0784000

40.0784000
Copper

Cu

14.19

1

2.08

63.5463000

63.5463000

Analysis wt%

CaO : 12.59, CuO : 17.65, CO2 : 77.87, H2O : 47.36 (Ref: Mineralogical Magazine 2002)

Strunz 9th edition incl. updates

10.AA.30

10: Organische Verbindungen
A: Salze organischer Säuren
A: [Acetate]
30:Paceit-Gruppe

Lapis Classification

IX/A.02-018

IX: ORGANISCHE VERBINDUNGEN
A: Salze organischer Säuren
2: Andere organische Salze, u.a. Mellate, Citrate und Acetate

Classification by Hölzel

A.AB.240

A: ORGANIC COMPLEXES
A: Carbonacids and their Salts
B: Other Carbonacids
2: Acetates

Dana 8th edition

50.02.07.02

50: Organic Minerals
02: Salts of Organic Acids (Mellitates, Citrates, Cyanates, and Acetates)
07: Hoganite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

dunkelblau

Streak color

blassblau

max. Birefringence

0.043
Birefringence chart\! Paceite title=Birefringence chart Paceite

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

1.439

RI value γ / ε

1.482

Ri mean

1.453

2V angle

Uniaxial (+)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

87

Space Group

I4/m

Cell parameters a (Å)

11.155

Cell parameters b (Å)

-

Cell parameters c (Å)

16.236

Cell parameters a/b or c/a

1.455

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

2020.311

X-Ray Powder Diffraction

9.297(10),
8.132(10),
7.896(100),
5.586(10),
3.675(10),
3.530(20),
3.042(10),
2.497(10)
XRD chart Paceite

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)

1.5

VHN (Hardness Vickers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.472 (berechnet)

1.472 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {100} und {110}

Fracture

uneben

Tenacity

spröde

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

Australien/New South Wales/Yancowinna Co./Broken Hill/Potosi Ag-Pb-Zn mine (Perilya Potosi Mine)

Preface

Author (Name, Year)

Hibbs & Kolitsch & Leverett & Sharpe & Williams, 2002

References

Mineralogical Magazine 66 (2002), 459

Other languages

German

Paceit

English

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French

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Spanish

Paceíta

Russian

Пасеит

Simplified Chinese

佩斯石

CNMNC (IMA)-Number

IMA 2001-030

CNMNC symbol

Symbol

Pac

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Ss0mcKmtM0eqAm_tNlR4TA
GUID (Global unique identifier) 7026CD4A-ADA9-4733-AA02-6FED3654784C
Database ID 2881