rockinronda
starting to spend too much on rocks
Member since December 2023
Posts: 154
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Post by rockinronda on Dec 21, 2023 18:05:23 GMT -5
I remember the old adage (unrelated) that all Gaels are Celts, not all Celts are Gaels. So I’m seeing with rock types and subtypes the same similar confusion. Agates are sub-cat of Chalcedony? Amethyst is sub-cat of Quartz? When speaking of quartz in terms of properties/tumbling, does that include all subtypes as well? Is there a chart that shows the major types and sub types of that type? Are there metamorphic types and igneous types of the same material? Just a lot of questions in general. Books from my local library are…sparse…and what I read ain’t stickin cause I have no contextual reference.
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Post by vegasjames on Dec 21, 2023 18:10:14 GMT -5
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rockinronda
starting to spend too much on rocks
Member since December 2023
Posts: 154
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Post by rockinronda on Dec 21, 2023 19:29:14 GMT -5
Thanks!
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Post by RickB on Dec 22, 2023 6:45:42 GMT -5
I remember the old adage (unrelated) that all Gaels are Celts, not all Celts are Gaels. So I’m seeing with rock types and subtypes the same similar confusion. Agates are sub-cat of Chalcedony? Amethyst is sub-cat of Quartz? When speaking of quartz in terms of properties/tumbling, does that include all subtypes as well? Is there a chart that shows the major types and sub types of that type? Are there metamorphic types and igneous types of the same material? Just a lot of questions in general. Books from my local library are…sparse…and what I read ain’t stickin cause I have no contextual reference. Here's another good link with photos that breaks rocks down into three groups - Igneous, metamorphic and sedimentary. geology.com/rocks/
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rockinronda
starting to spend too much on rocks
Member since December 2023
Posts: 154
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Post by rockinronda on Dec 22, 2023 8:46:24 GMT -5
Thank you!
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rockbrain
Cave Dweller
Member since January 2022
Posts: 2,510
Member is Online
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Post by rockbrain on Dec 22, 2023 15:20:34 GMT -5
I have 2 categories, Rocks that I have, Rocks that I don't have!
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rockinronda
starting to spend too much on rocks
Member since December 2023
Posts: 154
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Post by rockinronda on Dec 22, 2023 15:57:21 GMT -5
😆
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Post by jasoninsd on Dec 26, 2023 23:59:18 GMT -5
I have 2 categories, Rocks that I have, Rocks that I don't have! ...and subcategorized: Rocks I have: - The ones my wife knows about - The ones my wife doesn't know about
Rocks I don't have: - ...yet... - ...can't afford...yet!
LOL
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Post by 1dave on Mar 18, 2024 16:26:37 GMT -5
I remember the old adage (unrelated) that all Gaels are Celts, not all Celts are Gaels. So I’m seeing with rock types and subtypes the same similar confusion. Agates are sub-cat of Chalcedony? Amethyst is sub-cat of Quartz? When speaking of quartz in terms of properties/tumbling, does that include all subtypes as well? Is there a chart that shows the major types and sub types of that type? Are there metamorphic types and igneous types of the same material? Just a lot of questions in general. Books from my local library are…sparse…and what I read ain’t stickin cause I have no contextual reference. SiO2 is a strange critter, It exists so Manny ways.
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rockinronda
starting to spend too much on rocks
Member since December 2023
Posts: 154
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Post by rockinronda on Mar 19, 2024 15:00:40 GMT -5
There’s a lot going on there! Exactly what I’m looking for. Thank you!
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ThomasT
spending too much on rocks
Trying to keep the dust down.
Member since June 2022
Posts: 258
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Post by ThomasT on Mar 19, 2024 21:16:07 GMT -5
Very good chart showing the transition phases of silica and temps.
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