The Mineral tincalconite
Most Borax specimens lose water in their structure if stored in dry areas and alter to Tincalconite. Although Tincalconite is found in a natural state, almost all specimens were transformed from Borax after being taken from the mine.
The name Tincal in ancient times applied to the mineral Borax, but now it is synonymous with Tincalconite.
|Other ID Marks
1) Has a sweetish, metallic taste.
2) Dissolves in water.
Tincalconite is found most significantly at the Boron, in the Kramer District, Kern Co., California. It occurs in several other Borax localities, such as Searles Lake, San Bernardino Co., and always as a pseudomorph of Borax.
Distingushing Similar Minerals
Tincalconite's unusual properties distinguish it from all minerals.