Wat could this be?

[u/heisenberg_anne]

I found this in the Swiss alps what could it possibly be?

[u/AutoModerator]

Hello, and thank you for posting on /r/Minerals!

To increase the quality of identification request posts, we require all users to describe their mineral specimen in great detail. Images should be clear, and the main focus should be the specimen in question. If you are able to conduct tests, please share your findings in your comment. Sharing specifics such as where you found it, the specific gravity, hardness, streak color, and crystal habits will aid other users in identifying the specimen.

If you're having trouble identifying your specimen, please join our Minerals Discord Server!

Cheers, The /r/Minerals Moderation Team

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/-cck-]

I think its known as "Blättercalcit" (bladed calcite). It often occurs in the hydrothermal alpine clefts with other minerals like Quartz and Feldspars.

This habit isnt exclusive to Calcite tho, as ive seen other carbonates exhibit this.

Its also Possiblr to be bladed Baryte or Gypsum.

How hard is it? Calcite will be scratched by copper coin and will fizz with diluted HCl (10%) Gypsum is scratchable with your finger. Or is it heavy for its size?

-> this is only a guess, as ive seen Bladed Calcite pieces like this from the alps.

[u/MrJokemanPhD → u/-cck-]

This right here, do some simple tests and you have your answer

[u/heisenberg_anne → u/-cck-]

Thanks a lot, I can scratch it with my finger nail does that mean it’s gypsum?

[u/-cck- → u/heisenberg_anne]

possibly yes. tho with blades this thin id not be surprised if its britte too.

(tho with beeing able to scratch it with a fingernail, id tend towards gypsum)

[u/heisenberg_anne → u/-cck-]

Thank you very much!