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Pyrope

Pictures (64 Images total)

Pyrop
Views (Image: 1287700269): 12905, Rating: 9.2
Pyrop

I Mondei, Montescheno, Antrona Tal, Val d'Ossola, Verbano-Cusio-Ossola, Provinz, Piemont (Piemonte), Region, Italien;
Größe: 1,8 mm

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-10-22
Locality: I Mondei / Montescheno / Antrona, Valle (Tal) / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Pyrop
Views (Image: 1311722304): 7503, Rating: 9
Pyrop

Größe: 2,5 mm; Fundort: I Mondei, Montescheno, Antrona-Tal, Val d'Ossola, Provinz Verbano-Cusio-Ossola, Provinz, Region Piemont, Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: slugslayer 2011-07-27
Locality: I Mondei / Montescheno / Antrona, Valle (Tal) / Verbano-Cusio-Ossola, Provinz / Piemont (Piemonte), Region / Italien
Pyrop
Views (Image: 1360665905): 8377, Rating: 8.71
Pyrop

Bildbreite 12mm, von hinten beleuchtet. Fundort Třebívlice bei Lovosice, Tschechien

Collection: berthold
Copyright: berthold
Contribution: berthold 2013-02-12
Locality: Trebnitz (Trebenice) / Litomerice, Bezirk / Usti (Ústecký kraj) / Tschechien
Pyrop
Views (Image: 1356297689): 833
Pyrop (SNr: B002620)

Gerundete rotviolette Kristalle aus dem Wüstensand, Bildbreite = 3,8 mm, Fundort: Conception Bay bei der Walvis Bay, Erongo Region, Namibia.

Collection: Lithothek der Münchener Micromounter
Copyright: Manfred Früchtl
Contribution: Münchener Micromounter 2012-12-23
Locality: Conception Bay / Walvis Bay, Kreis / Erongo, Region / Namibia
Pyrop
Views (Image: 1632946984): 668
Pyrop

Pyrop mit "Kelyphit-Corona" in oberflächlich verwittertem Serpentinit / serpentinisiertem Peridotit (zudem winzige Magnetit-xx); Stufe ca. 8 x 4 x 3,5 cm; FO: Mitterbachgraben, Aggsbach Dorf, NÖ, AT

Collection: Oliver S.
Copyright: oliverOliver
Contribution: oliverOliver 2021-09-29
Locality: Mitterbachgraben / Aggsbach-Dorf / Schönbühel-Aggsbach, Marktgemeinde / Melk, Bezirk / Niederösterreich / Österreich
Pyrop
Views (Image: 1311723627): 7460, Rating: 8.38
Pyrop

Bildbreite: 1 mm; Fundort: Vestřev, Nov Paka, Jitschin, Region Königgrätz, Tschechien

Copyright: Vitezslav Snasel
Contribution: slugslayer 2011-07-27
Locality: Neustadt (Vestrev) / Trutnov (Trautenau), Bezirk / Königgrätz (Kralovehradecky kraj) / Tschechien

Collectors Summary

Color Blood rot, orange rot, purpurrot, rosa, schwarz rot
Streak color weiß
Hardness (Mohs) 7.5
Solubility + HF nur
Crystal System kubisch, Ia3d

Additional information / Summary

Siehe auch Mineralienportrait: Granat - Pyrop

Chemism

Chem­ical formula

{Mg3}[Al2](Si3)O12

Chem­ical com­po­si­tion

Aluminium, Magnesium, Silicium, Sauerstoff

Unit weight: 403.1280064 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Mg3}[Al2](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

47.63

12

60.00

15.9994300

191.9931600

Magnesium

Mg

18.09

3

15.00

24.3050600

72.9151800

Aluminium

Al

13.39

2

10.00

26.9815382

53.9630764

Silicon

Si

20.90

3

15.00

28.0855300

84.2565900

Anal­y­sis wt%

SiO2 : 41.97, Al2O3 : 21.73, Cr2O3 : 0.72, Fe2O3 : 2.36, FeO : 6.17, MnO : 0.97, MgO : 20.45, CaO : 5.52 (Ref: Veda Priod.Praha,36)

Strunz 9th edi­tion incl. updates

9.AD.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
D: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] und gewöhnlich größerer Koordination
25:Granat-Gruppe

Lapis Clas­sifica­tion

VIII/A.08-010

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
8: Kationen in kubischer und oktaedrischer Koordination [8+6]; Granat-Gruppe

Clas­sifica­tion by Hölzel

9.AC.100

9: SILICATES
A: Nesosilicates
C: Garnet-Group
1: Pyralspites - 8-coord. Mg, Fe(2+), Mn(2+); Pyrope - Spessartine-Group

Dana 8th edi­tion

51.04.03a.01

51: Nesosilicate Minerals
04: Nesosilicates Nesosilicate Insular SiO4 Groups Only with cations in [6] and >[6] coordination
03a: Garnet group (Pyralspite series)

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Garnet supergroup  ⇒ Silicate garnets; Garnet group (Z charge 12)

Optical Properties

Color

Blood rot, orange rot, purpurrot, rosa, schwarz rot

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis teilweise durchscheinend

RI value α / ω / n

1.74

Ri mean

1.74

2V angle

Isotropisch

Optical Data Luminescence

Color LW-UV (365nm)

 

orangerot

Most Common Acti­vator

Mn2+

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

11.46

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

1505.06

X-Ray Pow­der Diffrac­tion

2.865(60),
2.562(100),
2.443(40),
2.339(20),
2.247(20),
1.859(20),
1.589(30),
1.531(50)

XRD chart Pyrope

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)

7.5

VHN (Hard­ness Vick­ers)

1450 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.65 - 3.84 / Durchschnittlich = 3.74

3.558 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+ HF nur

(Co-)Type locality

(Co-)Type locality

Type mate­r­ial

Mineralogische Sammlung der TU Bergakademie Freiberg

Col­lec­tion number of type mate­r­ial

100334 - 100339 / K 97

Par­a­ge­n­e­sis of type mate­r­ial

Konglomerat von kalkigem und tonigem Kalk-Mergel mit Serpentin, Opal, Gneis, Glimmerschiefer, Granulit, Granit, Calcit, Gips und verkieseltem Holz

Preface

Name from

dem griechischen pyropos - feuerähnlich

Author (Name, Year)

Werner, 1803

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 666

Yongtao Zou, Steeve Gréaux, Tetsuo Irifune, Matthew L. Whitaker, Toru Shinmei, Yuji Higo: Thermal equation of state of Mg3Al2Si3O12 pyrope garnet up to 19 GPa and 1,700 K. Physics and Chemistry of Minerals Volume 39, Number 7 (2012), S. 589-598. (an synth. Kristall untersucht).

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Nomenclature of the garnet supergroup. American Mineralogist; preprint December 2012 - [Formel].

IMA group assignments

 
{X3}[Y2](Z3)φ12
 
 


 
 
 
{Fe2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Sc2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Ti2](SiAl2)O12
kubisch
Ia3d

 
 
 
{Mg3}[Cr3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Mg3}[MgSi](Si3)O12
kubisch
 

 
 
 
{Y2Ca}[Mg2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[TiFe2+](Si3)O12
kubisch
Ia3d

 
 
 
{Mg3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Mn2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
{Ca3}[Cr3+2](Si3)O12
kubisch
Ia3d

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Actuality: 28. Jun 2022 - 17:13:15

Varieties

Rhodolite

Umbalite

rosa bis violette Pyrop-Varietät, 1978 beschrieben vom Fluss Umba, Tansania

Other languages

Hungarian

Pirop

Polish

Pirop

Lithuanian

Piropas

Spanish

Piropo

Dutch

Pyroop

German

Pyrop

English

Pyrope

French

Pyrope

Russian

Пироп

Ukrainian

Піроп

Japanese

苦礬柘榴石

Traditional Chinese

鎂鋁榴石

Simplified Chinese

镁铝榴石

Alternative Name

Arizona Ruby

Bhmischer Granat

Bohemian Garnet

Böhmischer Granat

Cape Ruby

Colorado Ruby

Elie Ruby

Greenlandite (of Klaproth)

Greenlandite (of Klaproth)

Pyrope Garnet

Italian

Vogesita

Vogesite

CNMNC symbol

Symbol

Prp

Rock part of

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Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 28. Jun 2022 - 17:13:16

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Пироп

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Pyrop
Crystal-Treasure.com - search for: Pyrop
Bosse - search for: Pyrop
Edelsteine Neuburg - Gundolf Fischer - search for: Pyrop

Locations with GPS information