Wikipedia

2207 readers

285 users here now

A place to share interesting articles from Wikipedia.

Rules:

Only links to Wikipedia permitted
Please stick to the format "Article Title (other descriptive text/editorialization)"
Tick the NSFW box for submissions with inappropriate thumbnails
On Casual Tuesdays, we allow submissions from wikis other than Wikipedia.

Recommended:

If possible, when submitting please delete the "m." from "en.m.wikipedia.org". This will ensure people clicking from desktop will get the full Wikipedia website.
Use the search box to see if someone has previously submitted an article. Some apps will also notify you if you are resubmitting an article previously shared on Lemmy.

founded 2 years ago

MODERATORS

dantheclamman

Plum

Goldstone (glass) (en.wikipedia.org)

submitted 1 month ago by Plum to c/wikipedia

1 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 2 points 2 weeks ago* (last edited 2 weeks ago)

Interesting related page:

Helenite, also known as Mount St. Helens obsidian, emerald obsidianite, and ruby obsidianite, is a glass made from the fused volcanic rock dust from Mount St. Helens and marketed as a gemstone. Helenite was first created accidentally after the eruption of Mount St. Helens in 1980. Workers from the Weyerhaeuser Timber Company were attempting to salvage equipment damaged after the volcanic eruption. Using acetylene torches, they noticed that the intense heat was melting the nearby volcanic ash and rock and turning it a greenish color. The silica, aluminium, iron, and trace amounts of chromium and copper present in the rocks and ash in the area, combined with the heat of the torches, transformed the volcanic particles into a compound that would be later commercially replicated as helenite.

https://en.wikipedia.org/wiki/Helenite?wprov=sfla1