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Identity HelpBladed calcite?

1st Nov 2020 19:23 UTCScott DeLano

Probably a stupid question but have you seen what appears to be bladed calcite crystals? I have not but the sample came from an area with a lot of calcite and it is the same color as the calcite here. Streaks like calcite. Same hardness. Have just never seen blades before...

1st Nov 2020 19:54 UTCErik Vercammen Expert

Calcite can form very thin bladelike crystals; the translation of the German name is paper-spar.

1st Nov 2020 22:32 UTCMark Heintzelman 🌟 Expert

An example of calcite "papier spathe" from my own collection. https://www.mindat.org/photo-23362.html

1st Nov 2020 22:40 UTCPaul De Bondt Manager

Geevor and Levant mine in Cornwall produced quite a lot of them.

Keep safe.

2nd Nov 2020 00:16 UTCHarold Moritz 🌟 Expert

Yes, these are actually very flat rhombohedra. Test with a drop of acid.

2nd Nov 2020 02:29 UTCKevin Conroy Manager

Scott, could you post a photo of your specimen?

3rd Nov 2020 01:09 UTCGregg Little 🌟

Scott; Do a calcite photo gallery search here on Mindat with the modifier "angel wing", the habit name for this bladed type of calcite. There are a number of photos.

3rd Nov 2020 16:57 UTCDonald B Peck Expert

Nice specimen!

2nd Mar 2022 14:20 UTCHeather Brittingham

This was bought as "paper calcite" it has a huge blade on the back. It is highly UV reactive 😁

2nd Mar 2022 14:22 UTCHeather Brittingham

This was also "Paper Calcite" and this one is Extremely UV reactive.

2nd Mar 2022 14:23 UTCHeather Brittingham

This Mangano even has some blades around the base.

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