User talk:Bobblehead
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| 25 April 2024 |
Sphalerite is a sulfide mineral with the chemical formula (Zn,Fe)S. It is found in a variety of deposit types, and is found in association with galena, chalcopyrite, pyrite (and other sulfides), calcite, dolomite, quartz, rhodochrosite, and fluorite. Sphalerite is an important ore of zinc, with around 95 percent of all primary zinc extracted from its ore. Due to its variable trace-element content, sphalerite is also an important source of several other metals such as cadmium, gallium, germanium and indium. The zinc in sphalerite is also used to produce brass. This sample was extracted in Creede, Colorado, and features black tetrahedral crystals of sphalerite up to 8 mm (0.31 in) in size, with minor chalcopyrite and calcite, in a 4.5 cm × 3.0 cm × 2.0 cm (1.77 in × 1.18 in × 0.79 in) matrix. This photograph was focus-stacked from 125 separate images.Photograph credit: Ivar Leidus
SIAs
Hi there. Could you, please, explain, why so many changes like this one were made without first consulting with
WP:RUSSIA? Thank you.—Ëzhiki (Igels Hérissonovich Ïzhakoff-Amursky) • (yo?
); 13:03, February 26, 2009 (UTC)
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Seattle Wiknic 2015
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In the Seattle area? You are invited to the Seattle Wiknic 2015 on Sunday, July 5, 2015, 11am to 2pm at the Washington Park Arboretum, in the meadow area to the south of the Graham Visitors Center, approximately at 47°38′15″N 122°17′38″W / 47.637435°N 122.293986°W. Click here for more details!
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Seattle Wiknic 2016
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In the Seattle area? You are invited to the Seattle Wiknic 2016 on Saturday, July 16, 2016, noon to 3pm at the Washington Park Arboretum, in the meadow area to the south of the Graham Visitors Center, approximately at 47°38′15″N 122°17′38″W / 47.637435°N 122.293986°W. Click here for more details!
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Meetup in Seattle on 16 January 2024
| Seattle Wikimedia meetup | 16 January 2024 |  |
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