Discover and read the best of Twitter Threads about #dolomite

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We love getting questions about #mining, #minerals and #geology! We were recently asked about the #ScotchLake #Quarry in #CapeBreton (aka the #GeorgesRiver Quarry). Here’s our answer:

#nspoli #NovaScotia #NS #cb Image
This dolomite #quarry operated from 1899-1951 and was owned by the Dominion Iron and Steel Company (acronym: DISCO!). The #mineral dolomite has many uses, including for acid neutralization in the chemical industry, in stream restoration projects and as a soil conditioner.
#nspoli Image
DISCO made steel with #CapeBreton #coal and #iron from #Newfoundland in #Sydney's #WhitneyPier neighbourhood (named for Henry Melville Whitney, DISCO's president). #Steel is iron and carbon, and the carbon is derived from coal.
#nspoli #NovaScotia #NS #CB #mining #minerals Image
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I had exactly 30min entry-to-exit to explore @hmns.

I’d heard they have a solid collection of trilobites & the massive cut blue sapphire Siren of Serendip is a special exhibit.

But with the clock ticking down, I raced up the stairs & tumbled into Cullen Hall of Gems & Minerals. Museum wall sign of icons indicating different types of exhibits
#Crocoite: Shiny red-orange spiketastic lead chromate.

Despite being named for colour-matching saffron, lead makes it firmly “Do Not Lick.”

This particular spikefren is from Adelaide Mine, Tasmania, sticking with “everything cute in Australia can secretly kill you” theme. Adamantine red-orange long prismatic crystalsAdamantine red-orange long prismatic crystalsAdamantine red-orange long prismatic crystals
#Fluorite: a honkin’ massive cube of calcium fluorite with that particular dull-waxy translucence I wanna pet so bad.

No UV light to see if it’d fluoresce pretty colours for me.

From Nikolaevskiy Mine in Russia where hot sulfide solutions crystallized in limestone caverns. Large translucent pale green cube with smaller cube to sideClose-up of cubical facets
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