Difference between revisions of "Pyrope"

From CAMEO
Jump to navigation Jump to search
m (Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2")
 
(6 intermediate revisions by the same user not shown)
Line 1: Line 1:
 
[[File:pp30290pyrope.jpg|thumb|Pyrope]]
 
[[File:pp30290pyrope.jpg|thumb|Pyrope]]
 +
[[File:Pyrope R050112 Sample Photo 23436 M.jpg|thumb|Pyrope crystal<br> Image credit: [https://rruff.info/pyrope/display=default/R050112 RRUFF]]]
 
== Description ==
 
== Description ==
  
Line 5: Line 6:
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
 +
[[File:Pyrope IR-ATR R040159.png|thumb|Infrared spectrum of Pyrope<br>Image credit: [https://rruff.info/pyrope/display=default/R040159 RRUFF]]]
 +
[[File:Pyrope raman RRUFF R040159.png|thumb|Raman spectrum of pyrope<br>Image credit: [https://rruff.info/pyrope/display=default/R040159 RRUFF]]]
 +
garnet; Cape ruby; Arizona ruby;  California ruby; Bohemian ruby; rhodolite (violet); piropo (Esp., Port.); Pyrop (Deut.); pyroop (Ned.)
  
−
garnet; Cape ruby; Bohemian garnet; rhodolite (violet); piropo (Esp., Port.); Pyrop (Deut.); pyroop (Ned.)
+
==Physical and Chemical Properties==
  
−
[[[SliderGallery rightalign|pyrope.jpg~Raman]]]
+
* Fracture = conchoidal
−
 
+
* Luster = vitreous to resinous
−
== Other Properties ==
+
* Streak = colorless to white
−
 
+
* Birefringence = isotropic
−
Fracture = conchoidal.  Luster = vitreous to resinous.  Streak = colorless to white.  Birefringence = isotropic.  Pleochroism = none.  UV fluorescence = inert.
+
* Pleochroism = none
−
 
+
* UV fluorescence = inert
−
{| class="wikitable"
+
* Composition = 3MgO-Al2O3-3SiO2
−
|-
+
* Mohs Hardness = 7.0 - 7.5
−
! scope="row"| Composition
+
* Density = 3.78 g/ml
−
| 3MgO-Al2O3-3SiO2
+
* Refractive Index = 1.714-1.742
−
|-
 
−
! scope="row"| Mohs Hardness
 
−
| 7.0 - 7.5
 
−
|-
 
−
! scope="row"| Density
 
−
| 3.78
 
−
|-
 
−
! scope="row"| Refractive Index
 
−
| 1.714-1.742
 
−
|}
 
−
 
 
−
== Additional Information ==
 
−
 
 
−
Mineralogy Database: [http://www.webmineral.com/data/Pyrope.shtml Pyrope]
 
  
 
== Comparisons ==
 
== Comparisons ==
Line 37: Line 27:
 
[[media:download_file_458.pdf|Properties of Common Gemstones]]
 
[[media:download_file_458.pdf|Properties of Common Gemstones]]
  
−
 
+
==Resources and Citations==
−
 
+
* Gem Identification Lab Manual, Gemological Institute of America, 2016.
−
== Sources Checked for Data in Record ==
+
* Mineralogy Database: [http://www.webmineral.com/data/Pyrope.shtml Pyrope]
−
 
 
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 354
 
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 354
−
 
 
* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982
 
* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982
−
 
+
* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "pyrope." Accessed 14 Sept. 2001 .
−
* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "pyrope." Encyclopædia Britannica. 14 Sept. 2001 .
 
−
 
 
 
* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
 
* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979
−
 
+
* Wikipedia: http://en.wikipedia.org/wiki/Pyrope (Accessed Sept. 14, 2005)
−
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Pyrope (Accessed Sept. 14, 2005)
 
−
 
 
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
  

Latest revision as of 14:30, 20 December 2022

Pyrope
Pyrope crystal
Image credit: RRUFF

Description

A transparent, ruby-red Garnet composed of magnesium aluminum silicate where the magnesium is partially replaced with calcium and iron. The color of pyrope ranges from a deep red to almost black. Gemstone quality pyropes are mined in the Czech Republic, South Africa, and Australia.

Synonyms and Related Terms

Infrared spectrum of Pyrope
Image credit: RRUFF
Raman spectrum of pyrope
Image credit: RRUFF

garnet; Cape ruby; Arizona ruby; California ruby; Bohemian ruby; rhodolite (violet); piropo (Esp., Port.); Pyrop (Deut.); pyroop (Ned.)

Physical and Chemical Properties

  • Fracture = conchoidal
  • Luster = vitreous to resinous
  • Streak = colorless to white
  • Birefringence = isotropic
  • Pleochroism = none
  • UV fluorescence = inert
  • Composition = 3MgO-Al2O3-3SiO2
  • Mohs Hardness = 7.0 - 7.5
  • Density = 3.78 g/ml
  • Refractive Index = 1.714-1.742

Comparisons

Properties of Common Gemstones

Resources and Citations

  • Gem Identification Lab Manual, Gemological Institute of America, 2016.
  • Mineralogy Database: Pyrope
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 354
  • Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
  • Encyclopedia Britannica, http://www.britannica.com Comment: "pyrope." Accessed 14 Sept. 2001 .
  • C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
  • Wikipedia: http://en.wikipedia.org/wiki/Pyrope (Accessed Sept. 14, 2005)
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

Retrieved from "https://cameo.mfa.org/index.php?title=Pyrope&oldid=95140"