#sanidine — Public Fediverse posts

Sanidine vs Hematite (planetary science edition)

While plagioclase is the dominant feldspar on Mars, high concentrations of sanidine were measured in the Windjana drill sample by Curiosity in Gale crater but it is present in other drill samples.

Hematite is a common mineral on Mars but is particularly abundant in a feature called Vera Rubin ridge at Gale crater. The presence of gray hematite in one sample suggeste hydrothermal precipitation.

#MinCup25 #Sanidine #Hematite

Sanidine vs Hematite (planetary science edition)

While plagioclase is the dominant feldspar on Mars, high concentrations of sanidine were measured in the Windjana drill sample by Curiosity in Gale crater but it is present in other drill samples.

Hematite is a common mineral on Mars but is particularly abundant in a feature called Vera Rubin ridge at Gale crater. The presence of gray hematite in one sample suggeste hydrothermal precipitation.

#MinCup25 #Sanidine #Hematite

Sanidine vs Hematite (planetary science edition)

While plagioclase is the dominant feldspar on Mars, high concentrations of sanidine were measured in the Windjana drill sample by Curiosity in Gale crater but it is present in other drill samples.

Hematite is a common mineral on Mars but is particularly abundant in a feature called Vera Rubin ridge at Gale crater. The presence of gray hematite in one sample suggeste hydrothermal precipitation.

#MinCup25 #Sanidine #Hematite

Sanidine vs Hematite (planetary science edition)

While plagioclase is the dominant feldspar on Mars, high concentrations of sanidine were measured in the Windjana drill sample by Curiosity in Gale crater but it is present in other drill samples.

Hematite is a common mineral on Mars but is particularly abundant in a feature called Vera Rubin ridge at Gale crater. The presence of gray hematite in one sample suggeste hydrothermal precipitation.

#MinCup25 #Sanidine #Hematite

Sanidine vs Hematite (planetary science edition)

While plagioclase is the dominant feldspar on Mars, high concentrations of sanidine were measured in the Windjana drill sample by Curiosity in Gale crater but it is present in other drill samples.

Hematite is a common mineral on Mars but is particularly abundant in a feature called Vera Rubin ridge at Gale crater. The presence of gray hematite in one sample suggeste hydrothermal precipitation.

#MinCup25 #Sanidine #Hematite

I voted for #sanidine, because it made me so happy when I learned to recognize it in the Bishop Tuff. Nothing against #hematite, though. It can be used to date fault movement!

#Sanidine from the Fish Canyon Tuff is essential to understanding the pace of events in the #Cenozoic

High potassium, quickly erupted and cooled, and old enough to have accumulated sufficient 40Ar from radioactive decay. These crystals calibrate neutron flux for 40Ar/39Ar dating. The 28.2 Ma age of the FCT sanidine has been fine-tuned using #Milankovitch cycles of other ash beds in stable sedimentary basins.

photo from MinDat.org by Dan Polhemus

#MinCup25 #Geochronology #DeepTime #Colorado

#Sanidine from the Fish Canyon Tuff is essential to understanding the pace of events in the #Cenozoic

High potassium, quickly erupted and cooled, and old enough to have accumulated sufficient 40Ar from radioactive decay. These crystals calibrate neutron flux for 40Ar/39Ar dating. The 28.2 Ma age of the FCT sanidine has been fine-tuned using #Milankovitch cycles of other ash beds in stable sedimentary basins.

photo from MinDat.org by Dan Polhemus

#MinCup25 #Geochronology #DeepTime #Colorado

#Sanidine from the Fish Canyon Tuff is essential to understanding the pace of events in the #Cenozoic

High potassium, quickly erupted and cooled, and old enough to have accumulated sufficient 40Ar from radioactive decay. These crystals calibrate neutron flux for 40Ar/39Ar dating. The 28.2 Ma age of the FCT sanidine has been fine-tuned using #Milankovitch cycles of other ash beds in stable sedimentary basins.

photo from MinDat.org by Dan Polhemus

#MinCup25 #Geochronology #DeepTime #Colorado

#Sanidine from the Fish Canyon Tuff is essential to understanding the pace of events in the #Cenozoic

High potassium, quickly erupted and cooled, and old enough to have accumulated sufficient 40Ar from radioactive decay. These crystals calibrate neutron flux for 40Ar/39Ar dating. The 28.2 Ma age of the FCT sanidine has been fine-tuned using #Milankovitch cycles of other ash beds in stable sedimentary basins.

photo from MinDat.org by Dan Polhemus

#MinCup25 #Geochronology #DeepTime #Colorado

#Sanidine from the Fish Canyon Tuff is essential to understanding the pace of events in the #Cenozoic

High potassium, quickly erupted and cooled, and old enough to have accumulated sufficient 40Ar from radioactive decay. These crystals calibrate neutron flux for 40Ar/39Ar dating. The 28.2 Ma age of the FCT sanidine has been fine-tuned using #Milankovitch cycles of other ash beds in stable sedimentary basins.

photo from MinDat.org by Dan Polhemus

#MinCup25 #Geochronology #DeepTime #Colorado

@ombialik Agreed! I have at least 4 forms of Hemitite in my collection. I find it fascinating. Between #Hematite and #Sanidine there is no contest for me so I already voted. Thankfully over 250 folks agree with me on the vote. Anyone can vote in any daily contest. See posts with more information about the minerals by clicking their hashtags. And of course follow @MineralCup #MinCup25

@ombialik Agreed! I have at least 4 forms of Hemitite in my collection. I find it fascinating. Between #Hematite and #Sanidine there is no contest for me so I already voted. Thankfully over 250 folks agree with me on the vote. Anyone can vote in any daily contest. See posts with more information about the minerals by clicking their hashtags. And of course follow @MineralCup #MinCup25

@ombialik Agreed! I have at least 4 forms of Hemitite in my collection. I find it fascinating. Between #Hematite and #Sanidine there is no contest for me so I already voted. Thankfully over 250 folks agree with me on the vote. Anyone can vote in any daily contest. See posts with more information about the minerals by clicking their hashtags. And of course follow @MineralCup #MinCup25

@ombialik Agreed! I have at least 4 forms of Hemitite in my collection. I find it fascinating. Between #Hematite and #Sanidine there is no contest for me so I already voted. Thankfully over 250 folks agree with me on the vote. Anyone can vote in any daily contest. See posts with more information about the minerals by clicking their hashtags. And of course follow @MineralCup #MinCup25

@ombialik Agreed! I have at least 4 forms of Hemitite in my collection. I find it fascinating. Between #Hematite and #Sanidine there is no contest for me so I already voted. Thankfully over 250 folks agree with me on the vote. Anyone can vote in any daily contest. See posts with more information about the minerals by clicking their hashtags. And of course follow @MineralCup #MinCup25