Orbicular jasper: Difference between revisions

Content deleted Content added

Inline

Revision as of 21:27, 26 October 2024

Orbicular jasper is a variety of jasper which contains variably-colored orbs or spherical inclusions or zones. In highly silicified rhyolite or tuff, quartz and feldspar crystallize in radial aggregates of needle-like crystals which provide the basis or seed for the orbicular structure seen in this kind of jasper.^[1] The material is quite attractive when polished and is used as an ornamental stone or gemstone.

Various local or commercial names have been used for the material, such as kinradite, oregonite, ocean jasper and poppy-patterned jasper, depending on the source. Poppy-patterned jasper or poppy jasper is the varietal name for material from several locations, but the most well known is from Morgan Hill, Santa Clara County, California.^[2] The trade name ocean jasper is used for a variety found along the intertidal shores of northeast Madagascar. In Nebraska orbicular jasper is found in altered rhyolite beds noted for a variety of jaspers and related a

Arda Jasper® is a type of orbicular jasper like Ocean Jasper and it was discovered early 2017 in the Rhodopes of Bulgaria,from Greeks Nikolaos Dafnis and Asimina Sklari under the trade name Arda Jasper TM.. A piece of it is in the Bulgarian Geology museum where it was certified like Orbicular Jasper.

Gallery

Unpolished poppy jasper, Morgan Hill
Madagascar orbicular jasper (detail)
Orbicular Arda Jasper from Bulgaria.jpg
Orbicular Arda Jasper from Bulgaria.jpg

References

^ "Nebraska". America's Volcanic Past. United States Geological Survey. Archived from the original on 5 March 2014. Retrieved 28 February 2014.
^ Hohmann, James (12 November 2006). "City pride built on poppy jasper". San Jose Mercury News. Archived from the original on 9 March 2021. Retrieved 28 February 2014.

https://trafficnews.bg/bulgaria/mazh-otkri-nahodishte-riadak-iaspis-krai-momchilgrad-231829/

External links

[1] "Nebraska". America's Volcanic Past. United States Geological Survey. Archived from the original on 5 March 2014. Retrieved 28 February 2014.

[2] Hohmann, James (12 November 2006). "City pride built on poppy jasper". San Jose Mercury News. Archived from the original on 9 March 2021. Retrieved 28 February 2014.

[1]

[2]

@@ Line 4: / Line 4: @@
 '''Orbicular jasper''' is a variety of [[jasper]] which contains variably-colored ''orbs'' or spherical inclusions or zones. In highly silicified [[rhyolite]] or [[tuff]], [[quartz]] and [[feldspar]] crystallize in radial [[Aggregate (geology)|aggregate]]s of needle-like crystals which provide the basis or ''seed'' for the orbicular structure seen in this kind of jasper.<ref>{{cite web|title=Nebraska|url=http://vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volcanic_past_nebraska.html|work=America's Volcanic Past|publisher=United States Geological Survey|accessdate=28 February 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140305060338/https://vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volcanic_past_nebraska.html |archive-date=5 March 2014}}</ref> The material is quite attractive when polished and is used as an ornamental stone or [[gemstone]].
-Various local or commercial names have been used for the material, such as kinradite, oregonite, ocean jasper and poppy-patterned jasper, depending on the source. ''Poppy-patterned jasper'' or ''poppy jasper'' is the varietal name for material from several locations, but the most well known is from [[Morgan Hill, California|Morgan Hill]], [[Santa Clara County, California]].<ref>{{cite news|last=Hohmann|first=James|title=City pride built on poppy jasper|url=http://www.mercurynews.com/ci_5219104|accessdate=28 February 2014|newspaper=San Jose Mercury News|date=12 November 2006 |url-status=live |archive-url=https://web.archive.org/web/20210309130402/https://www.mercurynews.com/2007/02/13/city-pride-built-on-poppy-jasper/ |archive-date=9 March 2021}}</ref>  The trade name ''ocean jasper'' is used for a variety found along the intertidal shores of northeast [[Madagascar]]. In [[Nebraska]] orbicular jasper is found in altered rhyolite beds noted for a variety of jaspers and related [[agate]]s.
+Various local or commercial names have been used for the material, such as kinradite, oregonite, ocean jasper and poppy-patterned jasper, depending on the source. ''Poppy-patterned jasper'' or ''poppy jasper'' is the varietal name for material from several locations, but the most well known is from [[Morgan Hill, California|Morgan Hill]], [[Santa Clara County, California]].<ref>{{cite news|last=Hohmann|first=James|title=City pride built on poppy jasper|url=http://www.mercurynews.com/ci_5219104|accessdate=28 February 2014|newspaper=San Jose Mercury News|date=12 November 2006 |url-status=live |archive-url=https://web.archive.org/web/20210309130402/https://www.mercurynews.com/2007/02/13/city-pride-built-on-poppy-jasper/ |archive-date=9 March 2021}}</ref>  The trade name ''ocean jasper'' is used for a variety found along the intertidal shores of northeast [[Madagascar]]. In [[Nebraska]] orbicular jasper is found in altered rhyolite beds noted for a variety of jaspers and related [[agate|a]]
+Arda Jasper® is a type of orbicular jasper like Ocean Jasper and it was discovered early 2017 in the Rhodopes of Bulgaria,from Greeks Nikolaos Dafnis and Asimina Sklari under the trade name Arda Jasper TM.. A piece of it is in the Bulgarian Geology museum where it was certified like Orbicular Jasper.
 ==Gallery==
@@ Line 10: / Line 12: @@
 File:Poppyjasper.jpg|Unpolished poppy jasper, Morgan Hill
 File:Jaspe orbiculaire Madagascar 1597.jpg|Madagascar orbicular jasper (detail)
+File:Orbicular Arda Jasper from Bulgaria.jpg|Orbicular Arda Jasper from Bulgaria.jpg
+File:S20200424 0008.jpg|Orbicular Arda Jasper from Bulgaria.jpg
 </gallery>
 ==References==
+{{Reflist}}https://trafficnews.bg/bulgaria/mazh-otkri-nahodishte-riadak-iaspis-krai-momchilgrad-231829/
-{{Reflist}}
 ==External links==
@@ Line 19: / Line 23: @@
 *[http://www.mindat.org/min-27171.html Mindat with location data]
 *[http://csd.unl.edu/agates/agatelexiconletter.asp?Agate=O Agate variety names - University of Nebraska-Lincoln]
+*https://bnr.bg/kardzhali/post/101510575/edinstvenoto-v-evropa-nahodishte-na-orbikularen-aspis-e-krai-momchilgrad
 {{Silica minerals}}{{Morgan Hill, California}}
 [[Category:Geology of California]]

v t e Morgan Hill, California
Buildings	21-Mile House Malaguerra Winery Metcalf Energy Center Morgan Hill station Rhoades Ranch Villa Mira Monte
Education	Morgan Hill Unified School District Live Oak High School Oakwood School
Events, history, and culture	1984 Morgan Hill earthquake Mushroom Mardi Gras Festival Poppy Jasper International Film Festival Rancho Ojo del Agua de la Coche Rancho San Francisco de las Llagas
Natural monuments	Anderson Lake Chesbro Lake Coyote Creek Coyote Creek Trail El Toro Fisher Creek Henry W. Coe State Park (Poverty Flat Site) Mount Sizer Rancho Las Uvas Rancho Ojo del Agua de la Coche Rancho San Vicente Twin Peaks Uvas Canyon County Park (Uvas Falls) Uvas Reservoir
Neighborhoods	Coyote Valley (Coyote) Madrone Sveadal
Radio stations	KSQQ
Related	Monterey Road The Morgan Hill Times Orbicular jasper Silicon Valley Strikers
Category