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Ramsdellite

Pictures (33 Images total)

Ramsdellit
Views (Image: 1242550046): 2718
Ramsdellit

Größe: 79x48x20 mm; Fundort: Mistake Mine, Yavapai Co., Arizona, USA

Copyright: Rob Lavinsky
Contribution: slugslayer 2009-05-17
Locality: Mistake Mine / Sam Powell Peak / Box Canyon District / Yavapai Co. / Arizona / USA
Ramsdellit
Views (Image: 1296823071): 2462
Ramsdellit

Kristallgröße: 4 mm; Fundort: Serra da Mina, Cercal do Alentejo, Distrikt Setubal, Portugal

Copyright: Martins da Pedra
Contribution: slugslayer 2011-02-04
Locality: Serra da Mina / Cercal do Alentejo / Santiago do Cacém / Setúbal, Distrikt / Portugal
Ramsdellit
Views (Image: 1242549645): 1421
Ramsdellit

Größe: 11,3 x 9,1 x 5,3 cm; Fundort: Mistake Mine, Yavapai Co., Arizona, USA

Copyright: Rob Lavinsky
Contribution: slugslayer 2009-05-17
Locality: Mistake Mine / Sam Powell Peak / Box Canyon District / Yavapai Co. / Arizona / USA
Ramsdellit
Views (Image: 1242549728): 1886
Ramsdellit

Größe: 41x29x13 mm; Fundort: Mistake Mine, Yavapai Co., Arizona, USA

Copyright: Rob Lavinsky
Contribution: slugslayer 2009-05-17
Locality: Mistake Mine / Sam Powell Peak / Box Canyon District / Yavapai Co. / Arizona / USA
Ramsdellit
Views (Image: 1242549927): 1750
Ramsdellit

Größe: 59x37x18 mm; Fundort: Mistake Mine, Yavapai Co., Arizona, USA

Copyright: Rob Lavinsky
Contribution: slugslayer 2009-05-17
Locality: Mistake Mine / Sam Powell Peak / Box Canyon District / Yavapai Co. / Arizona / USA
Ramsdellit
Views (Image: 1242550075): 943
Ramsdellit

Größe: 89x57x35 mm; Fundort: Mistake Mine, Yavapai Co., Arizona, USA

Copyright: Rob Lavinsky
Contribution: slugslayer 2009-05-17
Locality: Mistake Mine / Sam Powell Peak / Box Canyon District / Yavapai Co. / Arizona / USA

Collectors Summary

Color eisenschwarz, schwarz, stahlgrau
Streak color bräunlichschwarz
Lustre Metallglanz
Hardness (Mohs) 3 !
Solubility +++ HCl
Crystal System orthorhombisch, Pbnm

Chemism

Chem­ical formula

MnO2

Chem­ical com­po­si­tion

Mangan, Sauerstoff

Unit weight: 86.9369099 u; Number of atoms in the formula: 3

Info

Empirical formula:

MnO2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

36.81

2

66.67

15.9994300

31.9988600

Manganese

Mn

63.19

1

33.33

54.9380499

54.9380499

Anal­y­sis wt%

MnO2 : 97.14, K2O : 0.41, H2O : 1.24, Al2O3 : 0.48, SiO2 : 0.42 (Ref: American Mineralogist 62)

Strunz 9th edi­tion incl. updates

4.DB.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
B: Mit mittelgroßen [Kationen]: Ketten kantenverknüpfter Oktaeder
15:Ramsdellit-Gruppe

Lapis Clas­sifica­tion

IV/D.10-010

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

Clas­sifica­tion by Hölzel

4.DF.100

4: OXIDES
D: Dioxides
F: Ramsdellite-Group

Dana 8th edi­tion

04.04.07.01

04: Oxide Minerals
04: Simple Oxides with a cation charge of 4+ (A++++ O2)

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

eisenschwarz, schwarz, stahlgrau

Streak color

bräunlichschwarz

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pbnm

Cell param­e­ters a (Å)

4.533

Cell param­e­ters b (Å)

9.27

Cell param­e­ters c (Å)

2.866

Cell param­e­ters a/b or c/a

0.489

Cell param­e­ters c/b

0.309

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

120.432

X-Ray Pow­der Diffrac­tion

4.059(100),
2.544(90),
2.427(10),
2.330(20),
1.904(30),
1.658(60),
1.617(80)

XRD chart Ramsdellite

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)

3 !

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.37

4.795 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HCl

(Co-)Type locality

(Co-)Type locality

USA/New Mexico/Sierra Co./Lake Valley District

Preface

Occurrences

Oxidationszone hydrothermaler Lagerstätten mit Siderit oder oxidische Fe-Mn-Lagerstätten

Author (Name, Year)

Fleischer & Richmond, 1943

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 467

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Nsutite

(gamma-MnO2)Mnx2+Mn1-x4+O2-2x(OH)2x

4.DB.15

Akhtenskite

Mn4+O2

hexagonal : 6/mmm : P63/mmc

4.DB.15

Ramsdellite

MnO2

orthorhombisch : mmm : Pbnm

4.DB.15

Paramontroseite

VO2

orthorhombisch : mmm : Pbnm

4.DB.15

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Ramsdellite

MnO2

orthorhombisch : mmm : Pbnm

IV/D.10-010

Akhtenskite

Mn4+O2

hexagonal : 6/mmm : P63/mmc

IV/D.10-015

Nsutite

(gamma-MnO2)Mnx2+Mn1-x4+O2-2x(OH)2x

IV/D.10-020

'Vernadite'

(Mn,Fe,Ca,Na)(O,OH)2·nH2O

tetragonal : 4/m : I4/m

IV/D.10-030

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Ramsdellite

MnO2

orthorhombisch : mmm : Pbnm

4.DF.100

Paramontroseite

VO2

orthorhombisch : mmm : Pbnm

4.DF.110

Anatase

TiO2

tetragonal : 4/mmm : I41/amd

4.DF.130

Downeyite

SeO2

tetragonal : 4/mmm : P42/mbc

4.DF.160

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Rutile

TiO2

tetragonal : 4/mmm : P42/mnm

04.04.01.01

Pyrolusite

MnO2

tetragonal : 4/mmm : P42/mnm

04.04.01.04

Cassiterite

SnO2

tetragonal : 4/mmm : P42/mnm

04.04.01.05

Plattnerite

PbO2

tetragonal : 4/mmm : P42/mnm

04.04.01.06

Argutite

GeO2

tetragonal : 4/mmm : P42/mnm

04.04.01.07

Stishovite

SiO2

tetragonal : 4/mmm : P42/mnm

04.04.01.09

Downeyite

SeO2

tetragonal : 4/mmm : P42/mbc

04.04.03.01

Paratellurite

TeO2

tetragonal : 422 : P43212

04.04.03.02

Anatase

TiO2

tetragonal : 4/mmm : I41/amd

04.04.04.01

Brookite

TiO2

orthorhombisch : mmm : Pbca

04.04.05.01

Tellurite

TeO2

orthorhombisch : mmm : Pbca

04.04.06.01

Scrutinyite

alpha-PbO2

orthorhombisch : mmm : Pbcn

04.04.06.02

Ramsdellite

MnO2

orthorhombisch : mmm : Pbnm

04.04.07.01

Nsutite

(gamma-MnO2)Mnx2+Mn1-x4+O2-2x(OH)2x

04.04.08.01

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Ramsdellit
Google-Bilder-Suche - search for: Ramsdellit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Ramsdellit

English pages

Mindat - search for: Ramsdellite
Webmineral - search for:Ramsdellite
Handbook-of-Mineralogy - search for: Ramsdellite
RRUFF - Raman, XRD and other mineral data - search for: Ramsdellite
RRUFF - References and PDF downloads - search for: Ramsdellite
American-Mineralogist-Crystal-Structure-Database - search for: Ramsdellite
Athena - search for: Ramsdellite

Russian pages

Webmineral.ru - search for: Рамсделлит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Ramsdellit
Crystal-Treasure.com - search for: Ramsdellit
Bosse - search for: Ramsdellit

Locations with GPS information