#MineralMonday is an active hashtag on Bluesky. In the last 30 days, 17 people shared 49 posts with it — around 2 a day. Activity is up 22% versus the previous week, peaking on Aug 24 with 10 posts.

Posts with #MineralMonday

Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)

@cambriancam.bsky.social

8 months ago

#MineralMonday Here is a big dark green Tourmaline (var. Elbaite) crystal from Brazil. The variety of green colored Elbaite is known is Verdelite. Would you believe I bought this specimen for $33 at an auction? This is at least a $300 specimen.

45 94 1588

CatWithRocks

@catwithrocks.bsky.social

10 months ago

Happy #MineralMonday y'all! Today I got a piece of Wavellite from Arkansas. It is sadly not lime flavored...

Acicular crystals of light green wavellite forming intergrown balls on a dark grey matrix. The balls to wavellite resemble limes.

44 127 1385

Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)

@cambriancam.bsky.social

10 months ago

#MineralMonday Here is a beautiful cluster of Iron Pyrite crystals from the Magmont Mine in Missouri (USA)

28 77 1321

CatWithRocks

@catwithrocks.bsky.social

9 months ago

This festive #MineralMonday is brought to you by Kinoite and Apophyllite. This sample is from the Christmas Mine in Gila Co., Arizona. A fitting specimen for the holiday season!

A mounted mineral specimen from Christmas Mine, Gila County, Arizona. The specimen has sharp, deep blue crystals of Kinoite and clear crystals of Apophyllite. The Apophyllite is transparent making it difficult to see many of the crystals. The crystals are on a buff colored sandstone.

30 104 1080

CatWithRocks

@catwithrocks.bsky.social

8 months ago

I have used this image as my banner, but never showed it off properly. So for this #MineralMonday, I proudly present this spectacular specimen of Malachite!

Mineral specimen of rich, crystalline Malachite with a green-blue color on the face of a light grey rock.

25 84 1072

CatWithRocks

@catwithrocks.bsky.social

7 months ago

Happy #MineralMonday peeps! Today I got an oldie from my collection, purple and blue Fluorite cubes on Muscovite with Quartz.

A mineral specimen of blue to purple Fluorite cubes sitting on grey Muscovite with a little bit of orange iron staining. White Quartz crystals are also growing on the Muscovite. This specimen is from China.

12 86 1034

CatWithRocks

@catwithrocks.bsky.social

7 months ago

Y'all know what today is! It's #MineralMonday! Today I have a funky little geode with golden needles of Millerite (NiS) inside!

A mineral specimen of a small geode with white Calcite and golden needles of Millerite in the cavity.

17 83 952

Wild Serenity Crystals

@wild-serenity.bsky.social

6 months ago

Mineral Monday with some beautiful Vera Cruz Amethyst points on a bed of little dog tooth Calcites, Peidra Parada, Veracruz State, Mexico. I love the juxtaposition of the gnarly little gray brown calcites with the regal purple amethyst points🩶💜 #mineralmonday #amethyst #calcite #crystal #minerals

11 55 737

Cam Muskelly (Explorer of Deep Time ⏰ ⚒️)

@cambriancam.bsky.social

6 months ago

Welcome back to #mineralmonday These are beautiful red Spessartine crystals. This particular specimen comes from Fujian Province, China. Spessartine is a species of magnesium rich Garnet that can be deep red or orange in color. They pop out very nicely with the association of Feldspar and Quartz.

32 62 725

CatWithRocks

@catwithrocks.bsky.social

9 months ago

Psst... Hey... It's the first #MineralMonday of 2026! Today I have a specimen of Staurolite showing off it's classic twinning!

A mineral specimen of several long, dark brown Staurolite crystals in a white matrix. Some of the Staurolite crystals exhibit penetration twinning at 60 degree angle.

14 52 727

CatWithRocks

@catwithrocks.bsky.social

7 months ago

For this #MineralMonday I have a little fella! The weird "navel mine" crystal is Whitmoreite, an iron phosphate! This specimen comes from New Hampshire.

A mineral specimen of Whitmoreite under a microscope. The Whitmoreite is the brown and yellow crystal in the center. It is made up of a brown sphere with yellow needles extending from the sphere. It's shape resembles a navel mine. The rest of the rock is made up of pale green Ludlamite. This specimen is from Grafton County, New Hampshire.

11 54 713

Erika Anderson

@andersonmineral.bsky.social

4 months ago

Look at the colours in these opal nodules!! These are in rhyolite, a type of volcanic rock. #MineralMonday (well Mineraloid Monday) #VolcanoMonday #GeoscienceBluesky ⚒️🧪🌋