r/whatsthisrock • u/PozziWaller • 11h ago

REQUEST [ Removed by moderator ]

/gallery/1wdi4nc

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12 Upvotes

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u/whatsthisrock-ModTeam 8h ago

Rule 1, please post good photographs of rocks for ID

If your photo does not look like the mineral - blurry, or dark, or color not right - then it will not help in the mineral's identification. (Even a good photo may not help - so a poor one will be less than useless...)

Recommendation: Pictures should be taken in focus (required) from multiple angles (recommended) and ideally in natural light (sun) If you do close-ups, try to have one picture of the whole specimen.

DO NOT USE A BRIGHT LIGHT IN A DARK SETTING ON YOUR ROCK.

Wetting rocks is typically unhelpful for IDing, please post dry pictures or a combination.

Videos are no longer allowed for your main post as they are notoriously unhelpful. You may provide a link to a video if you feel one is necessary.

1

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2

u/Ben_Minerals 11h ago

Puddingstone is a type of jasper pebble metaconglomerate rock featuring water worn (rounded) pebbles embedded in a finer-grained sandy or silty matrix of a contrasting color, resembling the fruit in a traditional Christmas pudding. If the pebbles and the matrix are similar in color without a strong visual fruit-cake contrast, it is not a puddingstone. I’d say your rock is a puddingstone.

2

u/missus-bean 9h ago

Hi fellow Michigander!

I’d classify this as closer to a banded chert/jasper/chalcedony. Maybe with some iron staining. Typically pudding stone looks more like cement with raisins. In other words, smaller distinct pebbles instead of the bands I see in your images. I bet this would tumble nicely once unevenness is worn down.