⏳ 2D Rb-Sr Isochron Dating: Mineral Separates, Magnetic-Sector Mass Spectrometer and Metamorphic Resetting

Rubidium-strontium isochron dating with a simulated magnetic-sector mass spectrometer: six mineral separates, ion beams bent by r = sqrt(2mV/q)/B onto Faraday cups, mass-bias correction, York regression with MSWD, repeated runs and a metamorphic reset, with in-page checks including Monte-Carlo age scatter and a Lorentz-force integration.