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Penikisite (Penikisita)

Pictures (1 Images total)

Penikisit
Views (File:
1583169218
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Penikisit
grünes Aggregat von Penikisit neben Quarz, Hess River, Mayo District, Yukon, Kanada; BB ~ 2 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Kanada/Yukon-Territorium/Mayo Mining District
Mineral: Penikisite
Image: 1583169218
License: Usage for Mineralienatlas project only
Penikisit

grünes Aggregat von Penikisit neben Quarz, Hess River, Mayo District, Yukon, Kanada; BB 2 mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-02
Locality: Mayo Mining District / Yukon-Territorium / Kanada

You find additional specimen at the Geolitho Museum

Collectors Summary

Color blau, grün
Streak color weiß, blassgrün
Hardness (Mohs) 4
Crystal System triklin,

Chemism

Chemical formula

Ba(Mg,Fe2+)2Al2(PO4)3(OH)3

Chemical composition

Aluminium, Barium, Eisen, Magnesium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 591.607541 u; Number of atoms in the formula: 26

Info

Empirical formula:

Ba(Mg0.75Fe0.25)2Al2(PO4)3(OH)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.51

3

11.54

1.0079470

3.0238410

Oxygen

O

40.57

15

57.69

15.9994300

239.9914500

Magnesium

Mg

6.16

1.5

5.77

24.3050600

36.4575900

Aluminium

Al

9.12

2

7.69

26.9815382

53.9630764

Phosphorus

P

15.71

3

11.54

30.9737612

92.9212836

Iron

Fe

4.72

0.5

1.92

55.8452000

27.9226000

Barium

Ba

23.21

1

3.85

137.3277000

137.3277000

Analysis wt%

Ø MgO : 6.30, CaO : 1.40, FeO : 9.80, BaO : 24.70, Al2O3 : 17.70, P2O5 : 36.80, H2O : 3.90 (Ref: Canadian Mineralogist 77)

Strunz 9th edition incl. updates

8.BH.20

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
H: Mit mittelgroßen und meist großen [Kationen] (OH, etc.):RO4 = 1:1
20:Bjarebyit-Gruppe

Lapis Classification

VII/B.29-010

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
29: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Bjarebyit-Gruppe

Classification by Hölzel

8.BM.170

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
M: Phosphates, very large: 2, Vmed: 2,3
1: very large: 2, Vmed: 2+3 Kulanite-Group

Dana 8th edition

41.09.01.02

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
09: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A B)5 (XO4)3 Zq
01: Kulanite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

blau, grün

Streak color

weiß, blassgrün

max. Birefringence

0.021

Birefringence chart\! Penikisite title=Birefringence chart Penikisite

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

1.684

RI value β

1.688

RI value γ / ε

1.705

Ri mean

1.692

2V angle

Biaxial (+) 56°

Crystallography

Crystal System

triklin

Cell parameters a (Å)

8.999

Cell parameters b (Å)

12.069

Cell parameters c (Å)

4.921

Cell parameters a/b or c/a

0.746

Cell parameters c/b

0.408

Cell parameters α

90°..

Cell parameters β

100.32

Cell parameters γ

90°..

Z

2

Volume (ų)

525.818

X-Ray Powder Diffraction

8.81(60),
4.49(50),
3.094(100),
3.028(60),
2.915(80),
2.692(50),
2.684(60),
2.649(70)

XRD chart Penikisite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4

VHN (Hardness Vickers)

190 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.79 (gemessen)

3.736 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Mandarino & Sturman & Corlett, 1977

References

Canadian Mineralogist 15 (1977), 393

Other languages

German

Penikisit

Spanish

Penikisita

English

Penikisite

French

Penikisite

Russian

Пеникисит

CNMNC (IMA)-Number

IMA 1976-023

CNMNC symbol

Symbol

Pks

Locations with GPS information

IDs

GUSID (Global unique identifier short form) BHfUltTISUaGG8UIDJg78w
GUID (Global unique identifier) 96D47704-C8D4-4649-861B-C5080C983BF3
Database ID 2980