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Meyerhofferite

Pictures (13 Images total)

Meyerhofferit
Views (File:
1322169354
): 620
Meyerhofferit
Größe: 40x27 mm; Fundort: Mount Blanco Mine, Black Mts, Furnace Creek, Death Valley, Inyo Co., Kalifornien, USA
Copyright: Rock Currier; Contribution: slugslayer
Collection: Jim Minette
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Mount Blanco Mine
Mineral: Meyerhofferite
Image: 1322169354
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Meyerhofferit

Größe: 40x27 mm; Fundort: Mount Blanco Mine, Black Mts, Furnace Creek, Death Valley, Inyo Co., Kalifornien, USA

Collection: Jim Minette
Copyright: Rock Currier
Contribution: slugslayer 2011-11-24
Locality: Mount Blanco Mine / Black Mts / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Meyerhofferit
Views (File:
1166000585
): 1308
Meyerhofferit
Bildbreite: 4 mm; Fundort Mount Blanco mine, Black Mts, Furnace Creek, Death Valley, Inyo Co., California, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Mount Blanco Mine
Mineral: Meyerhofferite
Image: 1166000585
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Meyerhofferit

Bildbreite: 4 mm; Fundort Mount Blanco mine, Black Mts, Furnace Creek, Death Valley, Inyo Co., California, USA

Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-13
Locality: Mount Blanco Mine / Black Mts / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Inyoit mit Meyerhofferit
Views (File:
1248877870
): 1697
Inyoit mit Meyerhofferit
Größe: 95x77x45 mm; Fundort: Monte Azul Lagerstätte, Sijes, Salta, Argentinien
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: Argentinien/Salta, Provinz/Sijes/Monte Azul
Mineral: Inyoite, Meyerhofferite
Image: 1248877870
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Inyoit mit Meyerhofferit

Größe: 95x77x45 mm; Fundort: Monte Azul Lagerstätte, Sijes, Salta, Argentinien

Copyright: Rob Lavinsky
Contribution: slugslayer 2009-07-29
Locality: Monte Azul / Sijes / Salta, Provinz / Argentinien
MEYERHOFFERIT in Inyoit
Views (File:
1349732308
): 422
MEYERHOFFERIT in Inyoit
Mount Blanco Mine im Death Vally National Park, Kalifornien, USA BB.: ca. 3mm
Copyright: Daniel Neumann; Contribution: Neumann
Collection: Daniel Neumann, Collection number: 00702.a
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Mount Blanco Mine
Mineral: Meyerhofferite
Image: 1349732308
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
MEYERHOFFERIT in Inyoit (SNr: 00702.a)

Mount Blanco Mine im Death Vally National Park, Kalifornien, USA BB.: ca. 3mm

Collection: Daniel Neumann
Copyright: Daniel Neumann
Contribution: Neumann 2012-10-08
Locality: Mount Blanco Mine / Black Mts / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Meyerhofferit
Views (File:
1515358653
): 333
Meyerhofferit
Meyerhofferit, Günevi Mine, Bigadiç, Balikesir Prov., Marmara Region, Türkei, 60 x 45 x x20 mm
Copyright: Embarak; Contribution: Embarak
Collection: Embarak
Location: Türkei/Marmararegion/Balikesir, Provinz/Bigadiç, Landkreis/Bigadiç/Günevi Mine
Mineral: Meyerhofferite
Image: 1515358653
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Meyerhofferit

Meyerhofferit, Günevi Mine, Bigadiç, Balikesir Prov., Marmara Region, Türkei, 60 x 45 x x20 mm

Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2018-01-07
Locality: Günevi Mine / Bigadiç / Bigadiç, Landkreis / Balikesir, Provinz / Marmararegion / Türkei
Meyerhofferit
Views (File:
1159210685
): 1080
Meyerhofferit
Größe: 30x26 mm; Fundort: Mount Blanco Mine, Black Mts, Furnace Creek, Death Valley, Inyo Co., Kalifornien, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Mount Blanco Mine
Mineral: Meyerhofferite
Image: 1159210685
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Meyerhofferit

Größe: 30x26 mm; Fundort: Mount Blanco Mine, Black Mts, Furnace Creek, Death Valley, Inyo Co., Kalifornien, USA

Copyright: John Sobolewski
Contribution: slugslayer 2006-09-25
Locality: Mount Blanco Mine / Black Mts / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA

Collectors Summary

Color farblos, weiß
Streak color weiß
Lustre Glasglanz, Seidenglanz
Hardness (Mohs) 2
Cleavages volkommen {010}, in Spuren {100}, {110}
Solubility +++ Säuren, + H2O
Crystal System triklin, P1

Chemism

Chem­ical formula

CaB3O3(OH)5·H2O

Chem­ical com­po­si­tion

Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 223.563999 u; Number of atoms in the formula: 20

Info

Empirical formula:

CaB3O3(OH)5·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

3.16

7

35.00

1.0079470

7.0556290

Boron

B

14.51

3

15.00

10.8117000

32.4351000

Oxygen

O

64.41

9

45.00

15.9994300

143.9948700

Calcium

Ca

17.93

1

5.00

40.0784000

40.0784000

Anal­y­sis wt%

CaO : 26.06, B2O3 : 44.39, H2O : 27.98 (Ref: Att.Tosc.Pisa,58)

Strunz 9th edi­tion incl. updates

6.CA.30

6: Borate
C: Triborate
A: Insel (Neso)-Triborate
30:Meyerhofferit-Gruppe

Lapis Clas­sifica­tion

V/H.06-040

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
6: Planare und tetraedrische Gruppen [B3O5] 1- bis [B6O10] 2-

Clas­sifica­tion by Hölzel

6.CA.250

6: Borates
C: Triborates
A: Nesotriborates
2: Inderite-Group - 3(P+2T)

Dana 8th edi­tion

26.03.02.01

26: Hydrated Borates Containing Hydroxyl or Halogen
03: Hydrated Borates Containing Hydroxyl or Halogen

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

Lus­tre

Glasglanz, Seidenglanz

max. Birefrin­gence

0.060

Birefringence chart\! Meyerhofferite title=Birefringence chart Meyerhofferite

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

1.500

RI value β

1.535

RI value γ / ε

1.560

Ri mean

1.532

2V angle

Biaxial (-) 78°

Dis­per­sion

r > v

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

gelblich weiß

LW-UV Other Col­ors

 

bläulich weiß

SW-UV Other Col­ors

 

bläulich weiß

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

6.617

Cell param­e­ters b (Å)

8.323

Cell param­e­ters c (Å)

6.494

Cell param­e­ters a/b or c/a

0.795

Cell param­e­ters c/b

0.780

Cell param­e­ters α

90.55

Cell param­e­ters β

101.88

Cell param­e­ters γ

86.62

Z

2

Volumne (ų)

349.376

X-Ray Pow­der Diffrac­tion

8.39(100),
6.51(100),
5.03(50),
3.30(30),
3.17(100),
2.540(50),
2.520(50),
2.149(20)

XRD chart Meyerhofferite

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)

2

VHN (Hard­ness Vick­ers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.12 (gemessen) 2.125 (berechnet)

2.125 ( ρ calc. Mineralienatlas )

Cleav­ages

volkommen {010}, in Spuren {100}, {110}

Radioac­tiv­ity

keine

Insta­bil­ity

+++ Säuren, + H2O

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Mount Blanco Mine

Type material

Harvard University, Cambridge, Massachusetts, USA

National Museum of Natural History, Washington, USA

Collection number of type material

134572 (Harvard), 134572 (Washington)

Preface

Occurrences

Typischerweise eine kleinere Komponente von sedimentären oder Seeboden Boratlagerstetten.

Asso­cia­tions

Inyoit, Colemanit, Hydroboracit, Ulexit

Name from

Wilhelm Meyerhoffer (1864–1906), einem deutschen Chemiker der zuerst das Mineral synthetisierte

Author (Name, Year)

Schaller, 1914

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 451

Burns, P.C. and F.C. Hawthorne - Hydrogen bonding in meyerhofferite: an X-ray and structure energy study. Can. Mineral., 31 (1993), 305–312.

Other languages

German

Meyerhofferit

Spanish

Meyerhofferita

French

Meyerhofferite

English

Meyerhofferite

Russian

Мейергофферит

CNMNC symbol

Symbol

Mhf

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

German pages

DeWikiPedia - search for: Meyerhofferit
Google-Bilder-Suche - search for: Meyerhofferit
Mineralienatlas.de (Forum) - search for: Meyerhofferit

English pages

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

Russian pages

Webmineral.ru - search for: Мейергофферит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Meyerhofferit
Crystal-Treasure.com - search for: Meyerhofferit
Bosse - search for: Meyerhofferit
Edelsteine Neuburg - Gundolf Fischer - search for: Meyerhofferit
Geolitho marketplace, by and for collectors - search for: Meyerhofferit

Locations with GPS information