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Fresnoite (Fresnoit)

Pictures (7 Images total)

Fresnoit
Views (File:
1697296277
): 37
Fresnoit
Fundstelle: Löley Eifel, Olympus E-M5II, Stonemaster StackUnit, Bildbreite 1,0 mm,
Copyright: Hartmut Stöckle; Contribution: Hartmut Stöckle
Collection: Hartmut Stöckle
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdorf/Löhley
Mineral: Fresnoite
Image: 1697296277
Rating: 10 (votes: 1)
License: Creative Commons - Attribution-Noncommercial (CC-BY-NC) V.3.0
Fresnoit

Fundstelle: Löley Eifel, Olympus E-M5II, Stonemaster StackUnit, Bildbreite 1,0 mm,

Collection: Hartmut Stöckle
Copyright: Hartmut Stöckle
Contribution: Hartmut Stöckle 2023-10-14
Locality: Löhley / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Fresnoit,
Views (File:
1261446717
): 2994
Fresnoit,
Graulai, Eifel, BB 3,3 mm
Copyright: Hannes Osterhammer; Contribution: eschuhbauer
Collection: Lithothek der Münchener Micromounter, Collection number: A025347, Donator: eschuhbauer
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Hillesheim/Steinbruch Stolz (Graulai; Graulay)
Mineral: Fresnoite
Image: 1261446717
Rating: 8 (votes: 3)
License: Usage for Mineralienatlas project only
Fresnoit, (SNr: A025347)

Graulai, Eifel, BB 3,3 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: eschuhbauer 2009-12-22
Locality: Steinbruch Stolz (Graulai; Graulay) / Hillesheim / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Fresnoit, Perowskit
Views (File:
1377343563
): 1750
Fresnoit, Perowskit
Fresnoit und Perowskit ineinander verwachsen; Bildbreite 1,9mm; Fundort: Löhley, Üdersdorf, Eifel, Deutschland; Raman-Spektrum liegt vor.
Copyright: guefz; Contribution: guefz
Collection: guefz
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdorf/Löhley
Mineral: Fresnoite
Image: 1377343563
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Fresnoit, Perowskit

Fresnoit und Perowskit ineinander verwachsen; Bildbreite 1,9mm; Fundort: Löhley, Üdersdorf, Eifel, Deutschland; Raman-Spektrum liegt vor.

Collection: guefz
Copyright: guefz
Contribution: guefz 2013-08-24
Locality: Löhley / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Fresnoit
Views (File:
1442323364
): 1333
Fresnoit
Löhley, Üdersdorf, Eifel, Rheinland-Pfalz, Deutschland. Fresnoit BB 2 mm
Copyright: Heinrich Weber; Contribution: Heinrich
Collection: Heinz Ehrig
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdorf/Löhley
Mineral: Fresnoite
Image: 1442323364
Rating: 5.5 (votes: 2)
License: Usage for Mineralienatlas project only
Fresnoit

Löhley, Üdersdorf, Eifel, Rheinland-Pfalz, Deutschland. Fresnoit BB 2 mm

Collection: Heinz Ehrig
Copyright: Heinrich Weber
Contribution: Heinrich 2015-09-15
Locality: Löhley / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland
Fresnoit
Views (File:
1498730600
): 664
Fresnoit
Größe: 3.9 x 2.9 x 2.4 cm; Fundort: Junnila Claim, San Benito County, USA
Copyright: John Veevaert; Contribution: slugslayer
Location: USA/Kalifornien (California)/San Benito Co./New Idria District/Junnila (Junilla) Mine
Mineral: Fresnoite
Image: 1498730600
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Fresnoit

Größe: 3.9 x 2.9 x 2.4 cm; Fundort: Junnila Claim, San Benito County, USA

Copyright: John Veevaert
Contribution: slugslayer 2017-06-29
Locality: Junnila (Junilla) Mine / New Idria District / San Benito Co. / Kalifornien (California) / USA
blockiger gelber Fresnoit
Views (File:
1615282782
): 262
blockiger gelber Fresnoit
Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdor2,5 mmf/Löhley, BB =
Copyright: husi; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A005492, Donator: Manfred Seitz
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdorf/Löhley
Mineral: Fresnoite
Image: 1615282782
Rating: 4.5 (votes: 2)
License: Usage for Mineralienatlas project only
blockiger gelber Fresnoit (SNr: A005492)

Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdor2,5 mmf/Löhley, BB =

Collection: Lithothek der Münchener Micromounter
Copyright: husi
Contribution: Münchener Micromounter 2021-03-09
Locality: Löhley / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color zitronengelb
Streak color weiß
Hardness (Mohs) 3.00 - 4.00
Solubility +++ heiße HCl 1:1, + kalte verdünnte Säuren und Basen
Crystal System tetragonal, P4bm

Chemism

Chemical formula

Ba2TiSi2O8

Chemical composition

Barium, Silicium, Titan, Sauerstoff

Unit weight: 506.689 u; Number of atoms in the formula: 13

Info

Empirical formula:

Ba2TiSi2O8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

25.26

8

61.54

15.9994300

127.9954400

Silicon

Si

11.09

2

15.38

28.0855300

56.1710600

Titanium

Ti

9.45

1

7.69

47.8671000

47.8671000

Barium

Ba

54.21

2

15.38

137.3277000

274.6554000

Analysis wt%

SiO2 : 21.80, TiO2 : 17.20, FeO : 1.00, BaO : 59.40 (Ref: American Mineralogist 65)

Strunz 9th edition incl. updates

9.BE.15

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
15:Fresnoit-Gruppe

Lapis Classification

VIII/C.15-010

VIII: SILIKATE
C: Gruppensilikate
15: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F); Bafertisit-Reihe

Classification by Hölzel

9.BH.400

9: SILICATES
B: Sorosilicates
H: Rosenbuschite-Lamprophyllite-Group

Dana 8th edition

55.04.02.01

55: Sorosilicate Minerals
04: Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination
02: Fresnoite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

zitronengelb

Streak color

weiß

max. Birefringence

0.002

Birefringence chart\! Fresnoite title=Birefringence chart Fresnoite

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

1.764

RI value γ / ε

1.762

Ri mean

1.763

2V angle

Uniaxial (-)

Optical Data Luminescence

Color LW-UV (365nm)



nicht fluoreszierend

Color SW-UV (254nm)

 

bläulich weiß

SW-UV Intensity

stark

SW-UV Other Colors

     

gelblich weiß, blassgelb, gelblich

Most Common Activator

Ti4+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

tetragonal

Class (H-M)

4mm

Space Group number

100

Space Group

P4bm

Cell parameters a (Å)

8.520

Cell parameters b (Å)

-

Cell parameters c (Å)

5.210

Cell parameters a/b or c/a

0.612

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

378.196

X-Ray Powder Diffraction

5.20(20),
3.81(20),
3.305(50),
3.08(100),
2.695(20),
2.610(20),
2.150(30),
2.065(20)

XRD chart Fresnoite

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)

3.00 - 4.00

VHN (Hardness Vickers)

380

Density (g/cm³)

4.43 (gemessen)

4.449 ( ρ calc. Mineralienatlas )

Instability

+++ heiße HCl 1:1, + kalte verdünnte Säuren und Basen

Preface

Author (Name, Year)

Alfors & Stinson & Matthews & Pabst, 1965

References

American Mineralogist 50 (1965), 314

Other languages

German

Fresnoit

Spanish

Fresnoita

English

Fresnoite

French

Fresnoite

Russian

Фресноит

Traditional Chinese

矽鈦鋇石

Simplified Chinese

硅钛钡石

CNMNC (IMA)-Number

IMA 1964-012

CNMNC symbol

Symbol

Fno

Locations with GPS information

IDs

GUSID (Global unique identifier short form) YGMo6i1tQEWt18RmBAff6A
GUID (Global unique identifier) EA286360-6D2D-4540-ADD7-C4660407DFE8
Database ID 1292