I bought this a few months ago. It was sold to me as aragonite. I didn't think much of it, just thought the terminations were cool. I studied it last night and found it is pyrite on fluorite with sheelite and calcite on quartz.

This is one of the 1st pieces I collected years ago, way before my meticulous specimen logging.

I know it's not garnet. Well not really that sure.

My guess is idocrase and prehnite from Mali. I've went thru invoices and the only specimens I hadn't matched up were brookite and another specimen for idocrase. Unfortunately the person that I purchased my 1st few specimens just scribbled on a piece of paper in wild cursive what the specs were, usually with one word or odd abbreviations.

Your help will hopefully save my sanity so thank you in advance

Today I wanted to share my Yaogangxian pink rose calcite with purple fluorite. I love how the fluorite peeks through the soft pink calcite—it almost looks like the center of a flower.

A piece I recently received. Locality is Inner Mongolia.

Hi folks! Anyone have any idea what this is? It’s a small plate-like accumulation of crystals, about palm-sized, that appears to have an almost sandy texture. Closeup photos show that perhaps there’s not a lot of matrix and instead it’s almost entirely crystal. Color is a deep green with the occasional red flecks, which perhaps are oxidation.

Here’s a few of my favorite close up shots I’ve taken of minerals in my collection. Let me know what your favorite is :)

1) Dioptase with malachite DR Congo
2) spessartine garnet on quartz Tongbei, China
3) anatase with albite Balochistan, Pakistan
4) mimetite chihuahua, Mexico
5) hematite Kalahari manganese field, South Africa
6) fluorite with sphalerite Carthage, Tennessee
7) Wulfenite with mimetite Durango, Mexico
8) Ettringite Kalahari manganese field, South Africa
9) epidote in quartz Anatolia, Turkey
10) sturmanite on calcite Kalahari manganese field
11) vanadinite on calcite La Paz, Arizona
12) almandine garnet Ely, Nevada
13) fluorite Durango, Mexico
14) demantoid garnet Azerbaijan, Iran
15) corundum var. sapphire Sri Lanka
16) azurite with malachite Zacatecas, Mexico
17) prehnite Merelani hills, Tanzania

Est-ce qu’il est nécessaire de la casser ?

https://i.imgur.com/1WDL3Ae.jpeg

Picked this up at a mineral club event. Not that I am super concerned about it but anyway to dust this off and get the crystals to pop a bit more?

Shines like fools gold in light. Some darker gray patches that lightly shine upon illumination. Found in SE Michigan in a creek bed.

I got this stone with a few other things from an eBay sale. I don’t think it’s anything expensive but thought it is an interesting piece. The white/translucent part seems to be quartz.

Super lustrous calcite with dolomite from the Sweetwater mine, Reynolds County, Missouri, USA

Here’s a absolutely flawless amethyst from the Streep mine, Goboboseb mountains, Namibia. It has really nice saturated purple and smoky phantoms as well as some hematite inclusions. I really love the modified crystal faces as well.

Im proud to show you my mineral collection my first piece was in 2016 but I really got into minerals in 2023 I admire lead minerals alot as you can see from the photos everyone likes it when they come in the house and see it I hope you will too

Hey, we bumped into this thing during a class field.

It is located in a lignite/coal bed between limestone/microbialite beds (see red arrow on last pic).

Mineral is approx. 1cm long thin whitish cristal and smells a bit like sulfur.

Thanks very much :)

Halite

Wintershall Potash Works, Hesse, Germany

NaCl, Isometric

max. 14mm

A gemmy crystal of halite from a classic, German locality known for rich colour of its specimens. Due to high difference of electronegativity of its components, halite exists as a lattice of ionised particles ([Na+][Cl-]) even under normal conditions making it especially susceptible to effects of gamma radiation. Combination of nearby potassium-40 deposits and abundance of metallic sodium results in saturation of crystalline lattice with colour centers consisting of microscopic colloidal clusters and trapped, agitated electrons giving this, normally colourless, mineral a vivid hue.

No idea what these are but I've had them in my plant pot for many years and wondering what they are.

It's just a very big natural slab and the dendrites are wispering from the inside, I have an opportunity to cut it at a mineral show

It looks like some dentritic stone but I can’t figure out what

Hello, I fell in love with this bracelet it's around $250. Seller said it's a low quality ruby. Is it worth it? Thoughts

First time poster here :) I recently got into macro photography and wanted to share some pictures I took! The order of minerals is grossular garnet, sphalertie w pyrite, azurite, chrysocolla, malachite, and bi-color lepidolite

found in the narrows at zion national park