Igneous Rocks: Pegmatite

Pegmatite Geochemistry: An Insight A sample from an active lithium mine (~3% Li₂O) was analyzed using a handheld XRF and gave the following results: Rb = 4400 ppm, Cs = 263 ppm, Ta = 0 ppm, Sn = 50 ppm, Nb = 6 ppm. Despite coming from a lithium-rich zone, the Ta, Sn, and Nb values are quite low compared to other LCT (Lithium-Cesium-Tantalum) pegmatites observed in Nassarawa State of Nigeria. This suggests that: 1. The Li enrichment may have occurred independently of Ta–Nb–Sn mineralization, poss

Core Drilling for Lithium (Spodumene) Mineralization Our current drilling operation is focused on testing lithium-bearing pegmatites within a granitic–gneissic terrain. Drilling is being conducted at an inclination of 60° facing west, using NQ-size rods with a maximum drilling capacity of 300 m. The target zone for spodumene mineralization is projected between 25 m and 40 m, based on surface geological mapping and prior structural observations. The host lithologies include granite, granitic gnei

RECOGNIZING AN EVOLVED MICA PEGMATITE FOR LITHIUM PROSPECTS When a pegmatite starts showing elevated Rb, Cs, Ta, Sn, and Nb, it’s a strong signal that the rock is highly evolved , and could host lithium minerals. You’ll notice the mica color changes as the pegmatite evolves: Early stage: Dark brown to black (Biotite) Intermediate stage: Silvery or grey (Muscovite) Highly evolved: pink to purple (Lepidolite – lithium-bearing mica) So, if your mica pegmatite begins to shine with purple or lilac to

Rubellite Tourmaline on Cleavelandite Malkhan Pegmatite Field, Krasnyi Chikoy, Zabaykalsky Krai, Russia 19 cm tall x 23 cm wide Video 🎥 copyright ©️wilenskyminerals #FineMinerals #CrystalCollectors #MineralSpecimen #RareCrystals #fineminerals #mineralspecimen #crystalcollection #mineralsforsale #crystalhealing #crystaladdict #crystalcollectors #gemsandminerals #minerals #crystals #usa #tucson #tucsongemshow #denvergemshow #denver #mineralscollector #mineralscollectors #geology #geologyrocks | M

Granite or Pegmatite? Picked from a field site, this coarse-grained rock shows pink feldspar crystals with shiny flakes of mica, classic features of a granitic material. The pink hue is from potassium feldspar (microcline/orthoclase), while the sparkle comes from muscovite and biotite. Such rocks form from slow cooling of magma deep in the crust, often marking continental crustal zones that may host rare metals or gem minerals in pegmatitic varieties. Possible rock type: Muscovite Granite or Peg