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Priderite (Priderit)

Pictures (3 Images total)

Priderit
Views (File:
1477599995
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Priderit
Graulai, Hillesheim, Eifel. BB 0,9mm.
Copyright: Mabu; Contribution: Mabu
Collection: Mabu
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Hillesheim/Steinbruch Stolz (Graulai; Graulay)
Mineral: Priderite
Image: 1477599995
License: Usage for Mineralienatlas project only
Priderit

Graulai, Hillesheim, Eifel. BB 0,9mm.
Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2016-10-27
Locality: Steinbruch Stolz (Graulai; Graulay) / Hillesheim / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Priderit vom Mirador de la Centinela, Teneriffa
Views (File:
1544442915
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Priderit vom Mirador de la Centinela, Teneriffa
Schwarze Prismen mit gelbgrünem Klinozoisit. Bildbreite 1,2 mm
Copyright: Kurt Rüsenberg; Contribution: humboldt
Collection: humboldt
Location: Spanien/Kanarische Inseln/Teneriffa/Mirador de la Centinela
Mineral: Clinozoisite, Priderite
Image: 1544442915
License: Usage for Mineralienatlas project only
Priderit vom Mirador de la Centinela, Teneriffa

Schwarze Prismen mit gelbgrünem Klinozoisit. Bildbreite 1,2 mm
Collection: humboldt
Copyright: Kurt Rüsenberg
Contribution: humboldt 2018-12-10
Locality: Mirador de la Centinela / Teneriffa / Kanarische Inseln / Spanien
Priderit von Playa San Juan, Teneriffa
Views (File:
1613403787
): 369
Priderit von Playa San Juan, Teneriffa
Schwarze tetragonale Prismen mit farblosen Albittafeln in alteriertem Andesin, Bildbreite 2mm
Copyright: Kurt Rüsenberg; Contribution: humboldt
Collection: humboldt
Location: Spanien/Kanarische Inseln/Teneriffa/Playa San Juan
Mineral: Albite, Andesine, Priderite
Rock: melilitic rock
Image: 1613403787
License: Usage for Mineralienatlas project only
Priderit von Playa San Juan, Teneriffa

Schwarze tetragonale Prismen mit farblosen Albittafeln in alteriertem Andesin, Bildbreite 2mm
Collection: humboldt
Copyright: Kurt Rüsenberg
Contribution: humboldt 2021-02-15
Locality: Playa San Juan / Teneriffa / Kanarische Inseln / Spanien

Collectors Summary

Color rötlich, rötlich schwarz, schwarz
Streak color grau
Crystal System tetragonal, I4/m

Chemism

Chemical formula

K(Ti4+7Fe3+)O16

Chemical composition

Eisen, Titan, Kalium, Sauerstoff

Unit weight: 686.00409 u; Number of atoms in the formula: 25

Info

Empirical formula:

K(Ti7Fe)O16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

37.32

16

64.00

15.9994300

255.9908800
Potassium

K

5.70

1

4.00

39.0983100

39.0983100
Titanium

Ti

48.84

7

28.00

47.8671000

335.0697000
Iron

Fe

8.14

1

4.00

55.8452000

55.8452000

Analysis wt%

TiO2 : 70.60, Fe2O3 : 12.40, Al2O3 : 2.30, BaO : 6.70, K2O : 5.60, Na2O : 0.60 (Ref: Mineralogical Magazine 51)

Strunz 9th edition incl. updates

4.DK.05b

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
K: Mit großen (± mittelgroßen) [Kationen]; Tunnelstrukturen
05b:Priderit-Gruppe

Lapis Classification

IV/D.08-030

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)
8: Kryptomelan-Gruppe

Classification by Hölzel

4.CE.620

4: OXIDES
C: R2O3 Sesquioxides
E: Other complex Oxides, mostly hextrig
6: Freudenbergite-Group

Dana 8th edition

07.09.04.01

07: Multiple Oxides
09: Multiple Oxides

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Hollandite supergroup  ⇒ Priderite group

Optical Properties

Color

rötlich, rötlich schwarz, schwarz

Streak color

grau

Diaphaneity (Transparency)

opak

RI value α / ω / n

2.10>

RI value γ / ε

2.10>

2V angle

Uniaxial (+)

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

87

Space Group

I4/m

Cell parameters a (Å)

10.11

Cell parameters b (Å)

-

Cell parameters c (Å)

2.964

Cell parameters a/b or c/a

0.293

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volumne (ų)

302.957

X-Ray Powder Diffraction

7.14(50),
5.05(50),
3.20(100),
2.475(50),
2.226(30),
1.891(50),
1.687(30),
1.588(40)
XRD chart Priderite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.86

3.76 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Australien/Western Australia/Derby-West Kimberley Shire/Kimberley/Fitzroy Basin/Walgidee Hills

Preface

Author (Name, Year)

Norrish, 1951

References

Mineralogical Magazine 29 (1951), 496

European Journal of Mineralogy Volume 25 Number 1 (2013), p. 85 - 90

IMA group assignments

Varieties

Ba-Priderite

Other languages

German

Priderit

Spanish

Priderita

English

Priderite

French

Priderite

Russian

Прайдерит

Japanese

ﾎﾟﾗｲﾃﾞﾗｲﾄ

CNMNC symbol

Symbol

Pdr

Rock part of

Locations with GPS information