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Boothite (Boothit)

Pictures (2 Images total)

Boothit
Views (File:
1225462882
): 1573
Boothit
Fo.: Alma Mine, Leona Heights, Alameda Co.,Kalifornien, USA, plattiger, bläulicher Kristall, BB 1,0mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A012586, Donator: Melanie Albert
Location: USA/Kalifornien (California)/Alameda Co./Leona Heights/Alma Mine
Mineral: Boothite
Image: 1225462882
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Boothit (SNr: A012586)

Fo.: Alma Mine, Leona Heights, Alameda Co.,Kalifornien, USA, plattiger, bläulicher Kristall, BB 1,0mm
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2008-10-31
Locality: Alma Mine / Leona Heights / Alameda Co. / Kalifornien (California) / USA
Boothit
Views (File:
1081183222
): 1522
Boothit
Hellblaue Krusten des Kupfersulfats Boothit mit intensiv grünem Fedotovit und braunem Dolerophanit; Stufengröße: 1,5 x 1,4 cm; Fundort: Tolbachik-Vulkan, Kamtchatka, Sibirien, Russland
Copyright: McSchuerf; Contribution: Mineralienatlas
Collection: McSchuerf
Location: Russland/Ferner Osten, Föderationskreis/Kamtschatka Oblast/Tolbachik-Vulkan
Mineral: Boothite
Image: 1081183222
Rating: 4 (votes: 1)
License: Usage for Mineralienatlas project only
Boothit

Hellblaue Krusten des Kupfersulfats Boothit mit intensiv grünem Fedotovit und braunem Dolerophanit; Stufengröße: 1,5 x 1,4 cm; Fundort: Tolbachik-Vulkan, Kamtchatka, Sibirien, Russland
Collection: McSchuerf
Copyright: McSchuerf
Contribution: Mineralienatlas 2004-04-05
Locality: Tolbachik-Vulkan / Kamtschatka Oblast / Ferner Osten, Föderationskreis / Russland

You find additional Boothit specimen at the Geolitho Museum

Collectors Summary

Color hellblau
Streak color -
Lustre Glasglanz
Hardness (Mohs) 2 - 2.5
Solubility +++ H2O, dehydr. zu Chalkanthit an trockener Luft
Crystal System monoklin,
Morphology krustige Aggregate

Chemism

Chemical formula

(Cu,Mg)(SO4)·7H2O

Chemical composition

Kupfer, Magnesium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 275.906478 u; Number of atoms in the formula: 27

Info

Empirical formula:

(Cu0.75Mg0.25)(SO4)·7H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

5.11

14

51.85

1.0079470

14.1112580
Oxygen

O

63.79

11

40.74

15.9994300

175.9937300
Magnesium

Mg

2.20

0.25

0.93

24.3050600

6.0762650
Sulfur

S

11.62

1

3.70

32.0655000

32.0655000
Copper

Cu

17.27

0.75

2.78

63.5463000

47.6597250

Strunz 9th edition incl. updates

7.CB.35

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
35:Melanterit-Gruppe

Lapis Classification

VI/C.06-040

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
6: Mittelgroße Kationen; Melanterit-Gruppe

Classification by Hölzel

7.CB.410

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
B: Vitriol-Group, Mg,Fe,Co,Ni,Mn,Cu,Zn-Sulfates with 4 to 7 Water
4: Epsomite-Group

Dana 8th edition

29.06.10.02

29: Hydrated Acid and Sulfates
06: Hydrated Acid and Sulfates where A XO4 · x(H2O)
10: Melanterite Group (Heptahydrates, Monoclinic: P21/c)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellblau

Streak color

-

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz

max. Birefringence

0.02
Birefringence chart\! Boothite title=Birefringence chart Boothite

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

1.47

RI value β

1.48

RI value γ / ε

1.49

Ri mean

1.480

2V angle

Biaxial (+)- 90°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Cell parameters a (Å)

14.190

Cell parameters b (Å)

6.537

Cell parameters c (Å)

10.825

Cell parameters a/b or c/a

2.171

Cell parameters c/b

1.656

Cell parameters α

90°

Cell parameters β

106.2

Cell parameters γ

90°

Z

4

Volumne (ų)

964.257

X-Ray Powder Diffraction

5.538(20),
5.378(10),
4.890(100),
4.826(40),
3.798(30),
3.677(10),
3.269(20),
2.730(10)
XRD chart Boothite

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

Morphology

krustige Aggregate

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2 - 2.5

VHN (Hardness Vickers)

42 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.1

1.9 ( ρ calc. Mineralienatlas )

Radioactivity

nicht bekannt

Instability

+++ H2O, dehydr. zu Chalkanthit an trockener Luft

Chemical Properties and Tests

chemisch und durch Röntgenanalyse

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Alameda Co./Leona Heights/Alma Mine

Preface

Occurrences

als Sublimationsprodukt aus Fumarolen bedeutender Vulkangebiete; in der Oxidationszone arider Gebiete (z.B. Wüsten), bei etwa 0 Grad C gebildetes, wenig beständiges Mineral; Fundorte: Tolbachik-Vulkan, Kamtchatka, Sibirien, Russland; u.a. ..

Associations

Fedotovit (intensiv grün) und Dolerophanit (braun); u.a. ..

Rareness

selten

Author (Name, Year)

Schaller, 1903

Relevance, Usage

zu Sammlerzwecken

Collector information

schwer erhältliches Sammlermineral

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H302: Gesundheitsschädlich bei Verschlucken., H315: Verursacht Hautreizungen., H318: Verursacht schwere Augenschäden., H410: Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

References

Australian Journal of Mineralogy 10 (2004), 3

Other languages

German

Boothit

Spanish

Boothita

French

Boothite

English

Boothite

Russian

Бутит

Alternative Name

Boothite (of Schaller)

Copper-Melanterite

Magnesian Boothite

CNMNC symbol

Symbol

Boo

Locations with GPS information