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Donpeacorite (Donpeacorit)

Pictures (1 Images total)

Donpeacorit
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Donpeacorit
oranges Kristallaggregat von Donpeacorit, Balmat, St Lawrence County, New York, USA; BB ~ 3 mm, analysiert mittels REM-EDX
Copyright: Joy Desor; Contribution: openpit
Location: USA/New York/St. Lawrence Co./Balmat-Edwards Zinc District/Balmat
Mineral: Donpeacorite
Image: 1592657036
License: Usage for Mineralienatlas project only
Donpeacorit  E
Analysed with energy dispersive X-ray spectroscopy EDX

oranges Kristallaggregat von Donpeacorit, Balmat, St Lawrence County, New York, USA; BB 3 mm, analysiert mittels REM-EDX

Copyright: Joy Desor
Contribution: openpit 2020-06-20
Locality: Balmat / Balmat-Edwards Zinc District / St. Lawrence Co. / New York / USA

Collectors Summary

Color gelborange
Hardness (Mohs) 5.5
Crystal System orthorhombisch, Pbca

Chemism

Chemical formula

(Mn,Mg)MgSi2O6

Chemical composition

Magnesium, Mangan, Silicium, Sauerstoff

Unit weight: 223.752502425 u; Number of atoms in the formula: 10

Info

Empirical formula:

(Mn0.75Mg0.25)MgSi2O6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

42.90

6

60.00

15.9994300

95.9965800

Magnesium

Mg

13.58

1.25

12.50

24.3050600

30.3813250

Silicon

Si

25.10

2

20.00

28.0855300

56.1710600

Manganese

Mn

18.41

0.75

7.50

54.9380499

41.2035374

Analysis wt%

SiO2 : 55.12, MnO : 18.48, MgO : 26.31, CaO : 0.69 (Ref: American Mineralogist 1984)

Strunz 9th edition incl. updates

9.DA.05

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
A: Ketten- und Bandsilikate mit 2 periodischen Ketten SiO6; Pyroxen-Familie
05:Orthopyroxene

Lapis Classification

VIII/F.02-030

VIII: SILIKATE
F: Ketten- und Bandsilikate
2: Zweierketten [Si2O6] 4-; Pyroxen-Gruppe; Orthopyroxene

Classification by Hölzel

9.DE.110

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
E: Orthorhombic Pyroxenes and Pyroxenoides
1: Enstatite-Group

Dana 8th edition

65.01.02.03

65: Inosilicate Minerals
01: Inosilicates Inosilicate Single-Width Unbranched Chains, W=1 with chains P=2
02: Orthopyroxenes

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Pyroxene group  ⇒ Orthopyroxene group

Optical Properties

Color

gelborange

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.015

Birefringence chart\! Donpeacorite title=Birefringence chart Donpeacorite

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

1.677

RI value β

1.684

RI value γ / ε

1.692

Ri mean

1.684

2V angle

Biaxial (-) 88°

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

61

Space Group

Pbca

Cell parameters a (Å)

18.384

Cell parameters b (Å)

8.878

Cell parameters c (Å)

5.226

Cell parameters a/b or c/a

2.071

Cell parameters c/b

0.589

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

852.952

X-Ray Powder Diffraction

4.03(10),
3.18(100),
3.09(10),
2.961(10),
2.896(60),
2.510(10),
1.495(10),
1.479(10)

XRD chart Donpeacorite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.36

3.485 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Petersen & Anovitz & Essene, 1984

References

American Mineralogist 69 (1984), 472

IMA group assignments



 
 
 
(Mn,Mg)MgSi2O6
orthorhombisch
Pbca

 
 
 
Mg2Si2O6
orthorhombisch
Pbca

 
 
 
(Fe2+,Mg)2Si2O6
orthorhombisch
Pbca

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Actuality: 25. Mar 2024 - 08:29:34

Other languages

German

Donpeacorit

Spanish

Donpeacorita

French

Donpeacorite

English

Donpeacorite

Russian

Донпикорит

CNMNC symbol

Symbol

Don

IDs

GUSID (Global unique identifier short form) zRtXlAKloE235DXJ3TwdWw
GUID (Global unique identifier) 94571BCD-A502-4DA0-B7E4-35C9DD3C1D5B
Database ID 958