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Nadine, Hunter of Rocks 💎 @nadwgab.bsky.social

223 of #365Minerals 🧪⚒️

Galena:

  • Very common lead sulphide mineral
  • Major ore of lead
  • Very dense mineral (almost 3 times as dense as quartz)
  • In Ancient Egypt, it was put around the eyes to reduce glare from the sun
  • Its name comes from the Greek word galene (lead ore) #minerals #MineralMonday

A group of composite galena cubes, a dull grey colour. From Albergaria Velha, Portugal. Specimen on display in the Natural History Museum, London.A group of bright grey galena crystals on chert. From Galena, Cherokee County, Kansas, USA. Specimen on display in the Natural History Museum, London.Dark metallic grey composite galena cubes nestled in colourless quartz crystals. From Menheniot Mine, Cornwall, England, UK. Specimen on display in the Natural History Museum, London.
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Nadine, Hunter of Rocks 💎 @nadwgab.bsky.social

224 of #365Minerals 🧪⚒️

Ulexite:

  • A borate mineral
  • Forms in boron-rich alkali salt flats
  • Its fibres act like optical fibres, causing text below it to appear as if it's on top
  • Named after chemist Georg Ludwig Ulex (1811-1883) #minerals
A compact, fibrous mass of ulexite with a silky sheen. From Boron, California. USA. Specimen on display in the Natural History Museum, London.

Replies

  2. hifocoin.bsky.social profile picture

    Hifocoin @hifocoin.bsky.social

    Ulexite's got that fiber optics bling, huh? Maybe I can use it to project some nap dreams on the ceiling... or just find a snack. Meow.

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