K ar dating price
Prices in GBP apply to orders placed in Great Britain only. The basanite plug of Hegyestu erupted in the first phase of volcanic activity. K/Ar and Ar/Ar ages of the leucite-bearing basanite of Hegyestás were conflicting.Prices in € represent the retail prices valid in Germany (unless otherwise indicated). This is caused by the special Ar retention feature of leucite in this basanite.This is regarded as minimum age of eruption and it is similar to the Ar/Ar isochron age (7.78±0.07 Ma).Ar may release at low temperature from very finegrained mineral, or when the Ar release mechanism changes.
HCl treatment dissolved 28.0–63.5% of the K content.
The calculated K concentration for the dissolved part of samples with ~2%K was 4.02-6.42%: showing that leucite is responsible for the low temperature loss of 40Ar(rad).