Mineral
Rutilated Quartz (or possibly Tourmalinated Quartz, White Rutile)
SiO2 with TiO2 inclusions
AI-generated identification · may be incorrectHardness 7 (Mohs), transparent to translucent base with needle-like inclusions, vitreous luster.
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Physical properties
Hardness 7 (Mohs), transparent to translucent base with needle-like inclusions, vitreous luster.
Formation & geological history
Formed in hydrothermal veins and pegmatites where silica and rutile crystallize together.
Uses & applications
Commonly used in jewelry making, lapidary arts, and sought after by collectors for its unique inclusions.
Geological facts
The needle-like crystals inside the quartz are mostly rutile (titanium dioxide). The white needles are less common than golden or black ones.
Field identification & locations
Identified by the distinct needle-like inclusions within a quartz matrix. Found globally, notable deposits in Brazil and Madagascar.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary