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Henrymeyerite

Collectors Summary

Color graulich braun
Streak color rötlichbraun
Hardness (Mohs) 5.5
Cleavages zerbricht in kleinste Splitter wenn minimale Belastung durch Mikro-Kerbung angewendet wird
Fracture keiner
Crystal System tetragonal, I4/m

Chemism

Chemical formula

Ba(Ti4+7Fe2+)O16

Chemical composition

Barium, Eisen, Titan, Sauerstoff

Unit weight: 784.23348 u; Number of atoms in the formula: 25

Info

Empirical formula:

Ba(Ti7Fe)O16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

32.64

16

64.00

15.9994300

255.9908800
Titanium

Ti

42.73

7

28.00

47.8671000

335.0697000
Iron

Fe

7.12

1

4.00

55.8452000

55.8452000
Barium

Ba

17.51

1

4.00

137.3277000

137.3277000

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.08-033

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

Classification by Hölzel

4.DE.180

4: OXIDES
D: Dioxides
E: Pyrolusite-Group

Dana 8th edition

07.09.01.06

07: Multiple Oxides
09: Multiple Oxides
01: Cryptomelane Group (Hard black, fine-grained)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Hollandite supergroup  ⇒ Priderite group

Optical Properties

Color

graulich braun

Streak color

rötlichbraun

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

87

Space Group

I4/m

Cell parameters a (Å)

10.219

Cell parameters b (Å)

-

Cell parameters c (Å)

2.963

Cell parameters a/b or c/a

0.290

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volume (ų)

309.42

X-Ray Powder Diffraction

3.232(100),
2.486(30),
2.285(20),
2.236(40),
1.901(30),
1.703(20),
1.598(30),
1.405(30)
XRD chart Henrymeyerite

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)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4

4.208 ( ρ calc. Mineralienatlas )

Cleavages

zerbricht in kleinste Splitter wenn minimale Belastung durch Mikro-Kerbung angewendet wird

Fracture

keiner

Tenacity

sehr spröde

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Kovdor

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Kovdor/Kovdor Mine

Preface

Author (Name, Year)

Mitchell & Yakovenchuk & Chakhmouradian & Burns & Pakhomovsky, 2000

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

References

Canadian Mineralogist 38 (2000), 617

IMA group assignments

Other languages

German

Henrymeyerit

Spanish

Henrymeyerita

French

Henrymeyerite

English

Henrymeyerite

Russian

Генримейерит

Russian

Хенримейерит

Alternative Name

Ba-Fe-priderite

CNMNC (IMA)-Number

IMA 1999-016

CNMNC symbol

Symbol

Hmy

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 8T6X1jDFF0eKH2_wEVFbMA
GUID (Global unique identifier) D6973EF1-C530-4717-8A1F-6FF011515B30
Database ID 1570