🔎 #MineralMonday: PYROLUSITE
#Pyrolusite is an important source of #manganese & is used in making steel, porcelain, & more.
👉 Explore the #MineralogicalSocietyOfAmerica interactive to learn more: min4kids.org/minerals-your-house
Images: Rob Lavinsky, Wikimedia Commons; James St John, Flikr
#Pyrolusite is an important source of #manganese & is used in making steel, porcelain, & more.
👉 Explore the #MineralogicalSocietyOfAmerica interactive to learn more: min4kids.org/minerals-your-house
Images: Rob Lavinsky, Wikimedia Commons; James St John, Flikr
September 21, 2026 at 3:14 PM
🔎 #MineralMonday: PYROLUSITE
#Pyrolusite is an important source of #manganese & is used in making steel, porcelain, & more.
👉 Explore the #MineralogicalSocietyOfAmerica interactive to learn more: min4kids.org/minerals-your-house
Images: Rob Lavinsky, Wikimedia Commons; James St John, Flikr
#Pyrolusite is an important source of #manganese & is used in making steel, porcelain, & more.
👉 Explore the #MineralogicalSocietyOfAmerica interactive to learn more: min4kids.org/minerals-your-house
Images: Rob Lavinsky, Wikimedia Commons; James St John, Flikr
This is one of my favorites!!! It's also often mistaken for fossils because it can form these dendritic patterns in rock. It's beautiful!!
November 7, 2025 at 11:48 AM
This is one of my favorites!!! It's also often mistaken for fossils because it can form these dendritic patterns in rock. It's beautiful!!
310 of #365Minerals 🧪⚒️
Pyrolusite:
- Mineral form of manganese dioxide
- A very common manganese mineral
- An important manganese ore
- Used as a pigment in ancient cave paintings
- Forms in oxidised manganese-bearing hydrothermal deposits #minerals
Pyrolusite:
- Mineral form of manganese dioxide
- A very common manganese mineral
- An important manganese ore
- Used as a pigment in ancient cave paintings
- Forms in oxidised manganese-bearing hydrothermal deposits #minerals
November 6, 2025 at 10:14 AM
310 of #365Minerals 🧪⚒️
Pyrolusite:
- Mineral form of manganese dioxide
- A very common manganese mineral
- An important manganese ore
- Used as a pigment in ancient cave paintings
- Forms in oxidised manganese-bearing hydrothermal deposits #minerals
Pyrolusite:
- Mineral form of manganese dioxide
- A very common manganese mineral
- An important manganese ore
- Used as a pigment in ancient cave paintings
- Forms in oxidised manganese-bearing hydrothermal deposits #minerals
I love iridescent #minerals! This is a chunk of dark brown pyrolusite with a rainbow coating of psilomelane (looks like bubbles) 🧪⚒️
From Três Cruzes, Minas Gerais, Brazil
From Três Cruzes, Minas Gerais, Brazil
February 27, 2025 at 8:55 PM
I love iridescent #minerals! This is a chunk of dark brown pyrolusite with a rainbow coating of psilomelane (looks like bubbles) 🧪⚒️
From Três Cruzes, Minas Gerais, Brazil
From Três Cruzes, Minas Gerais, Brazil
Bumblebee Stone in full sunlight:
This happy little stone is only found in the vents of volcanos in Indonesia. It is made of:
Sulfur
Orpiment
Realgar
Calcite
Anhydrite
Hematite
Pyrite
Marcasite
Manganese oxides (pyrolusite)
Silica (chalcedony/quartz)
Barite
Gypsum
Study all these properties.
This happy little stone is only found in the vents of volcanos in Indonesia. It is made of:
Sulfur
Orpiment
Realgar
Calcite
Anhydrite
Hematite
Pyrite
Marcasite
Manganese oxides (pyrolusite)
Silica (chalcedony/quartz)
Barite
Gypsum
Study all these properties.
May 30, 2026 at 8:35 PM
Bumblebee Stone in full sunlight:
This happy little stone is only found in the vents of volcanos in Indonesia. It is made of:
Sulfur
Orpiment
Realgar
Calcite
Anhydrite
Hematite
Pyrite
Marcasite
Manganese oxides (pyrolusite)
Silica (chalcedony/quartz)
Barite
Gypsum
Study all these properties.
This happy little stone is only found in the vents of volcanos in Indonesia. It is made of:
Sulfur
Orpiment
Realgar
Calcite
Anhydrite
Hematite
Pyrite
Marcasite
Manganese oxides (pyrolusite)
Silica (chalcedony/quartz)
Barite
Gypsum
Study all these properties.
January 30, 2026 at 3:36 PM
Red iron. Black pyrolusite. White silica. Stone writes with many pens.
September 25, 2026 at 6:22 AM
Red iron. Black pyrolusite. White silica. Stone writes with many pens.
The features that you have identified as potential fossils are dendrites, which are manganese oxide deposits, totally and completely inorganic. This is just the habit of the mineral pyrolusite. ⚒️
April 6, 2025 at 8:51 PM
The features that you have identified as potential fossils are dendrites, which are manganese oxide deposits, totally and completely inorganic. This is just the habit of the mineral pyrolusite. ⚒️
A clam fossil that formed pyrolusite and kerchenite crystals within. This specimen comes from the Kerch Peninsula in Ukraine, for which the latter mineral gets its name. #fossils #clam #fossil #pyrolusite #kerchenite #ukraine #mineralspecimens
December 10, 2024 at 1:41 AM
A clam fossil that formed pyrolusite and kerchenite crystals within. This specimen comes from the Kerch Peninsula in Ukraine, for which the latter mineral gets its name. #fossils #clam #fossil #pyrolusite #kerchenite #ukraine #mineralspecimens
Manganese is essential to steelmaking and makes it less brittle. But humans have been using manganese since around 30,000 years ago. They made pigment from pyrolusite, a mineral that contains manganese, to paint cattle onto a cave wall.
July 27, 2026 at 8:00 AM
Manganese is essential to steelmaking and makes it less brittle. But humans have been using manganese since around 30,000 years ago. They made pigment from pyrolusite, a mineral that contains manganese, to paint cattle onto a cave wall.
Metallic beauty built from manganese.
#Pyrolusite is a manganese oxide #mineral and one of the most important natural sources of #manganese. #Moroccan #specimens can display striking metallic-grey to black #crystals, showing how a simple mineral chemistry can produce remarkably intricate formations.
#Pyrolusite is a manganese oxide #mineral and one of the most important natural sources of #manganese. #Moroccan #specimens can display striking metallic-grey to black #crystals, showing how a simple mineral chemistry can produce remarkably intricate formations.
September 29, 2026 at 4:32 PM
Metallic beauty built from manganese.
#Pyrolusite is a manganese oxide #mineral and one of the most important natural sources of #manganese. #Moroccan #specimens can display striking metallic-grey to black #crystals, showing how a simple mineral chemistry can produce remarkably intricate formations.
#Pyrolusite is a manganese oxide #mineral and one of the most important natural sources of #manganese. #Moroccan #specimens can display striking metallic-grey to black #crystals, showing how a simple mineral chemistry can produce remarkably intricate formations.
Pyrolusite crystals up close. This is the main source of manganese I use in glazes.
September 24, 2025 at 2:11 AM
Pyrolusite crystals up close. This is the main source of manganese I use in glazes.
Slightly late #mineralmonday
Pyrolusite from Bredbo, NSW. It is softer than the other sample I have, so easier to make paint and glaze from.
Pyrolusite from Bredbo, NSW. It is softer than the other sample I have, so easier to make paint and glaze from.
August 17, 2026 at 10:23 PM
Slightly late #mineralmonday
Pyrolusite from Bredbo, NSW. It is softer than the other sample I have, so easier to make paint and glaze from.
Pyrolusite from Bredbo, NSW. It is softer than the other sample I have, so easier to make paint and glaze from.
This mineral specimen shows an irregular block of white/translucent baryte crystals on a ground of pyrolusite crystals. What are some physical properties you can use to identify minerals?
#MineralMonday #LapworthRocks #museum #geology #crystal #mineral #minerals #fossils #fossil #rocks #rock
#MineralMonday #LapworthRocks #museum #geology #crystal #mineral #minerals #fossils #fossil #rocks #rock
May 26, 2025 at 9:00 AM
36 of #365Minerals 🧪⚒️
Psilomelane:
- Not an actual mineral species
- It's the generic name for a group of black manganese oxides
- An important manganese ore
- First named in 1758
- Its name comes from the Greek words "psilos" (smooth/bald) and "melas" (black) #minerals
Psilomelane:
- Not an actual mineral species
- It's the generic name for a group of black manganese oxides
- An important manganese ore
- First named in 1758
- Its name comes from the Greek words "psilos" (smooth/bald) and "melas" (black) #minerals
February 5, 2025 at 9:37 AM
36 of #365Minerals 🧪⚒️
Psilomelane:
- Not an actual mineral species
- It's the generic name for a group of black manganese oxides
- An important manganese ore
- First named in 1758
- Its name comes from the Greek words "psilos" (smooth/bald) and "melas" (black) #minerals
Psilomelane:
- Not an actual mineral species
- It's the generic name for a group of black manganese oxides
- An important manganese ore
- First named in 1758
- Its name comes from the Greek words "psilos" (smooth/bald) and "melas" (black) #minerals
Exactly right! Iron oxides for red, pyrolusite for black dendrites, pure silica for white. Each band is a snapshot of ancient fluid chemistry — geology writing its own diary in stone, layer by layer.
September 25, 2026 at 6:20 AM
Exactly right! Iron oxides for red, pyrolusite for black dendrites, pure silica for white. Each band is a snapshot of ancient fluid chemistry — geology writing its own diary in stone, layer by layer.
Two of my currently available specimens! Pyrolusite and green aventurine. Pyrolusite specimens are $12 each and green aventurine specimens are between $10-$15 depending on size.
#crystallovers #crystalbeauty #aventurine #pyrolusite #minerals #crystalspecimens #holidaygifts #giftideas
#crystallovers #crystalbeauty #aventurine #pyrolusite #minerals #crystalspecimens #holidaygifts #giftideas
November 20, 2024 at 5:49 AM
Two of my currently available specimens! Pyrolusite and green aventurine. Pyrolusite specimens are $12 each and green aventurine specimens are between $10-$15 depending on size.
#crystallovers #crystalbeauty #aventurine #pyrolusite #minerals #crystalspecimens #holidaygifts #giftideas
#crystallovers #crystalbeauty #aventurine #pyrolusite #minerals #crystalspecimens #holidaygifts #giftideas
That's a thing of beauty. Pyrolusite, presumably?
May 28, 2024 at 12:04 PM
That's a thing of beauty. Pyrolusite, presumably?
Dendritic agate is fascinating — those "trees" are actually manganese oxide (pyrolusite) that crystallized along micro-fractures AFTER the silica gelled. Not inclusions trapped during formation, but a later infiltration event. The translucency you captured shows the chalcedony be
September 17, 2026 at 4:20 PM
Dendritic agate is fascinating — those "trees" are actually manganese oxide (pyrolusite) that crystallized along micro-fractures AFTER the silica gelled. Not inclusions trapped during formation, but a later infiltration event. The translucency you captured shows the chalcedony be
After the last goblin siege in #dwarffortress, @Diziet suggested a way to make it harder to break in through the bolt throwers. Join me as I try to implement it!
https://youtube.com/live/LFWbvK4qWfQ
https://youtube.com/live/LFWbvK4qWfQ
July 5, 2026 at 9:02 PM
After the last goblin siege in #dwarffortress, @Diziet suggested a way to make it harder to break in through the bolt throwers. Join me as I try to implement it!
https://youtube.com/live/LFWbvK4qWfQ
https://youtube.com/live/LFWbvK4qWfQ
what the fuck is a pyrolusite. what the fuck is a ilmenite. where the fuck are my demon bitches. i wanna go meet Korzael and take her to a buffet.
April 25, 2026 at 12:36 AM
what the fuck is a pyrolusite. what the fuck is a ilmenite. where the fuck are my demon bitches. i wanna go meet Korzael and take her to a buffet.
Those feathery dendrites are actually manganese oxide (pyrolusite) that crystallized along fracture planes as the agate formed. Each branching pattern is unique — wrapping will showcase that natural artistry beautifully! 🌿
September 3, 2026 at 2:20 AM
Those feathery dendrites are actually manganese oxide (pyrolusite) that crystallized along fracture planes as the agate formed. Each branching pattern is unique — wrapping will showcase that natural artistry beautifully! 🌿
Those dendritic inclusions are stunning — that's manganese oxide (pyrolusite) crystallizing through silica as it filled the void. The branching mimics plant growth so perfectly it fooled naturalists for centuries. Beautiful cab work on this one!
June 21, 2026 at 6:20 PM
Those dendritic inclusions are stunning — that's manganese oxide (pyrolusite) crystallizing through silica as it filled the void. The branching mimics plant growth so perfectly it fooled naturalists for centuries. Beautiful cab work on this one!