Mineral Matters #1235 - Chert and Flint - Everything you wanted to know
#minerals #mineralmatters #🧪
mineralmatters.substack.com/p/chert-and-...
#minerals #mineralmatters #🧪
mineralmatters.substack.com/p/chert-and-...
Chert and Flint - Everything you wanted to know
Mineral Matters #1235
mineralmatters.substack.com
November 7, 2026 at 11:47 PM
Mineral Matters #1235 - Chert and Flint - Everything you wanted to know
#minerals #mineralmatters #🧪
mineralmatters.substack.com/p/chert-and-...
#minerals #mineralmatters #🧪
mineralmatters.substack.com/p/chert-and-...
Before/after south Texas banded chert. Pretty cool transformation. I added this rock to the tumblers in August, came out of polish yesterday. #bluewizardrocks #lapidary #rockhounding #rocktumbling
November 8, 2026 at 7:33 PM
Before/after south Texas banded chert. Pretty cool transformation. I added this rock to the tumblers in August, came out of polish yesterday. #bluewizardrocks #lapidary #rockhounding #rocktumbling
Louisiana gravel finds polished. I love this stuff…The first one is a botty crowley agate and the rest are probably chert. #bluewizardrocks #lapidary #rockhounding #rocktumbling #cajunrockhounding
November 8, 2026 at 12:39 AM
Louisiana gravel finds polished. I love this stuff…The first one is a botty crowley agate and the rest are probably chert. #bluewizardrocks #lapidary #rockhounding #rocktumbling #cajunrockhounding
Great, I spilled coffee and got it all over my chert
November 6, 2026 at 6:25 PM
Great, I spilled coffee and got it all over my chert
Google says #2 is probably chert. The one with the stripes is banded agate.
November 8, 2026 at 10:12 PM
Google says #2 is probably chert. The one with the stripes is banded agate.
Today’s #CoolRock, Bruh, is debating chert, agate, quartz, or shell bits. Maybe even fossilized shell bits.
Since my geology crowdsourcing worked out so well yesterday, today’s question:
I found all these colorful little… specimens… on the beach. I assume they are weathered bits of shells but some seem more like stones.
Any rockhounds/beachcombers know what these are?
I found all these colorful little… specimens… on the beach. I assume they are weathered bits of shells but some seem more like stones.
Any rockhounds/beachcombers know what these are?
November 9, 2026 at 5:19 AM
Today’s #CoolRock, Bruh, is debating chert, agate, quartz, or shell bits. Maybe even fossilized shell bits.
🏹Hit or miss?🦌
The lower third of a Chalcolithic-Early Bronze Age c.2,500-1,500 BC tanged unbarbed triangular stone arrowhead made from chert.
Another prehistoric ‘outtake’…
www.prehistoricwirral.com/hit-or-miss....
#FindsFriday #Archaeology #Prehistory #Wirral
The lower third of a Chalcolithic-Early Bronze Age c.2,500-1,500 BC tanged unbarbed triangular stone arrowhead made from chert.
Another prehistoric ‘outtake’…
www.prehistoricwirral.com/hit-or-miss....
#FindsFriday #Archaeology #Prehistory #Wirral
November 6, 2026 at 10:22 AM
🏹Hit or miss?🦌
The lower third of a Chalcolithic-Early Bronze Age c.2,500-1,500 BC tanged unbarbed triangular stone arrowhead made from chert.
Another prehistoric ‘outtake’…
www.prehistoricwirral.com/hit-or-miss....
#FindsFriday #Archaeology #Prehistory #Wirral
The lower third of a Chalcolithic-Early Bronze Age c.2,500-1,500 BC tanged unbarbed triangular stone arrowhead made from chert.
Another prehistoric ‘outtake’…
www.prehistoricwirral.com/hit-or-miss....
#FindsFriday #Archaeology #Prehistory #Wirral
Kerp, H., Bomfleur, B. & Krings, M. The Rhynie chert Lagerstätte – An Early Devonian hot-spring ecosystem frozen in time. PalZ (2026). doi.org/10.1007/s125...
The Rhynie chert Lagerstätte – An Early Devonian hot-spring ecosystem frozen in time - PalZ
The Early Devonian Rhynie chert Konservat Lagerstätte in Aberdeenshire, Scotland, contains an abundance of structurally preserved fossils of organisms that lived together in an early terrestrial geoth...
doi.org
November 1, 2026 at 1:43 PM
Kerp, H., Bomfleur, B. & Krings, M. The Rhynie chert Lagerstätte – An Early Devonian hot-spring ecosystem frozen in time. PalZ (2026). doi.org/10.1007/s125...
After lunch: #Strataday continues in the Corriganville limestone (Old Port Fm., overlying the Keyser). Keep yer chert on, mateys ... here be brachiopods! 🧪⚒️
November 8, 2026 at 1:26 AM
After lunch: #Strataday continues in the Corriganville limestone (Old Port Fm., overlying the Keyser). Keep yer chert on, mateys ... here be brachiopods! 🧪⚒️
Archaic point from the Neralich cache found at the Olive Branch site just south of Thebes, Illinois. Estimated to have been made as far back as 9500 BC, this massive 11 inch notched biface is made from Burlington chert, a chert type common around St Louis, MO.
November 7, 2026 at 9:34 PM
Archaic point from the Neralich cache found at the Olive Branch site just south of Thebes, Illinois. Estimated to have been made as far back as 9500 BC, this massive 11 inch notched biface is made from Burlington chert, a chert type common around St Louis, MO.
Today’s cool rock looks like banded chert! Lots of different colors and bands!
November 1, 2026 at 2:55 PM
Today’s cool rock looks like banded chert! Lots of different colors and bands!
Michigan Advance Trivia:
What is the name of the island that sits in Saginaw Bay and is believed to have been utilized for thousands of years by Native Americans as a source for the stone called “chert,” used for making stone tools?
Check back later for the answer.
What is the name of the island that sits in Saginaw Bay and is believed to have been utilized for thousands of years by Native Americans as a source for the stone called “chert,” used for making stone tools?
Check back later for the answer.
Ron Swanson: It's Trivia Time!
ALT: Ron Swanson: It's Trivia Time!
static.klipy.com
November 4, 2026 at 11:56 AM
Michigan Advance Trivia:
What is the name of the island that sits in Saginaw Bay and is believed to have been utilized for thousands of years by Native Americans as a source for the stone called “chert,” used for making stone tools?
Check back later for the answer.
What is the name of the island that sits in Saginaw Bay and is believed to have been utilized for thousands of years by Native Americans as a source for the stone called “chert,” used for making stone tools?
Check back later for the answer.
Chert’s Research Notes - property of Chert!
November 4, 2026 at 7:22 AM
Chert’s Research Notes - property of Chert!
Chert and flint — the stones that taught hands to make edges, basically. I love that there's a whole issue for them; the ordinary-looking rocks usually turn out to be the load-bearing ones.
November 8, 2026 at 12:02 AM
Chert and flint — the stones that taught hands to make edges, basically. I love that there's a whole issue for them; the ordinary-looking rocks usually turn out to be the load-bearing ones.
Chert and silica rich materials are rare in Eastern Australia. There is only one nsw obsidian deposit at a tertiary volcano. As a result silcrete was popular, and geochemical / isotope analysis has identified the deposits. It was traded all over the coast.
November 4, 2026 at 12:44 AM
Chert and silica rich materials are rare in Eastern Australia. There is only one nsw obsidian deposit at a tertiary volcano. As a result silcrete was popular, and geochemical / isotope analysis has identified the deposits. It was traded all over the coast.
I wish it did so much for me as it did for others. I really enjoyed it but there was no like profound moment or something.
The second cycle I sad with chert (crime that we cant hug or put a hand on cherts shoulder) the third with gabbro.
But the second I kinda knew that this was an elegy.
The second cycle I sad with chert (crime that we cant hug or put a hand on cherts shoulder) the third with gabbro.
But the second I kinda knew that this was an elegy.
November 6, 2026 at 1:59 PM
I wish it did so much for me as it did for others. I really enjoyed it but there was no like profound moment or something.
The second cycle I sad with chert (crime that we cant hug or put a hand on cherts shoulder) the third with gabbro.
But the second I kinda knew that this was an elegy.
The second cycle I sad with chert (crime that we cant hug or put a hand on cherts shoulder) the third with gabbro.
But the second I kinda knew that this was an elegy.
there was a crank named Chonosuke Okamura who used to give lectures claiming to have found homunculi and animalculi in chert, and apparently in 1978 an actual paleontologist walked in and got so mad about it he had some kind of hypertensive episode & died. I can't find a primary source on it though.
November 2, 2026 at 8:42 PM
there was a crank named Chonosuke Okamura who used to give lectures claiming to have found homunculi and animalculi in chert, and apparently in 1978 an actual paleontologist walked in and got so mad about it he had some kind of hypertensive episode & died. I can't find a primary source on it though.
A discovery for #fossilfriday: a chert pebble with a mould of the #Cretaceous heteromorph ammonite Scaphites. A rare erratic find @megwildflowers.bsky.social from the Lowestoft Till plateau of High Suffolk.
#fossils #paleontology
#fossils #paleontology
October 30, 2026 at 10:21 PM
A discovery for #fossilfriday: a chert pebble with a mould of the #Cretaceous heteromorph ammonite Scaphites. A rare erratic find @megwildflowers.bsky.social from the Lowestoft Till plateau of High Suffolk.
#fossils #paleontology
#fossils #paleontology
The International Society of Rocks has issued a formal statement:
“Granite does not speak for us.”
Nine other members have signed the complaint.
Documentation attached for the geologically challenged.
“Granite does not speak for us.”
Nine other members have signed the complaint.
Documentation attached for the geologically challenged.
November 2, 2026 at 8:07 PM
The International Society of Rocks has issued a formal statement:
“Granite does not speak for us.”
Nine other members have signed the complaint.
Documentation attached for the geologically challenged.
“Granite does not speak for us.”
Nine other members have signed the complaint.
Documentation attached for the geologically challenged.
If its chert likely. I found a chert hammerstone in a creek in florida 30ish years ago.
Its got smooth finger groves and fits my hand perfectly.
Its got smooth finger groves and fits my hand perfectly.
October 31, 2026 at 1:22 AM
If its chert likely. I found a chert hammerstone in a creek in florida 30ish years ago.
Its got smooth finger groves and fits my hand perfectly.
Its got smooth finger groves and fits my hand perfectly.
I'm going to give him the benefit of the doubt and say that he meant to say that granite withstands water erosion for thousand of years and "it's the only stone that does", but even there he's wrong. Quartzite, chert, and basalt all have similar properties.
Trump: Granite has thousands of years of life, which is the only stone that does
November 2, 2026 at 8:00 PM
I'm going to give him the benefit of the doubt and say that he meant to say that granite withstands water erosion for thousand of years and "it's the only stone that does", but even there he's wrong. Quartzite, chert, and basalt all have similar properties.
ich weiß nicht, was ich mit dieser information machen soll. noch mehr verwirrt mich, dass jemand diesen skeet ge spei chert hat. was ist hier los? 🤪
October 29, 2026 at 9:30 PM
ich weiß nicht, was ich mit dieser information machen soll. noch mehr verwirrt mich, dass jemand diesen skeet ge spei chert hat. was ist hier los? 🤪
Today's featured work is a necklace called "Searching For the Sacred": wingssilverwork.com/the-spirits-....
Sterling silver; White Buffalo magnesite; black chert arrowhead.
Sterling silver; White Buffalo magnesite; black chert arrowhead.
October 29, 2026 at 5:30 AM
Today's featured work is a necklace called "Searching For the Sacred": wingssilverwork.com/the-spirits-....
Sterling silver; White Buffalo magnesite; black chert arrowhead.
Sterling silver; White Buffalo magnesite; black chert arrowhead.
Been reading about too many different types of rocks at once. Everything about chert and feldspar are getting mixed up.
October 29, 2026 at 5:21 PM
Been reading about too many different types of rocks at once. Everything about chert and feldspar are getting mixed up.