Hellandite-(y)
Hellandite-(Y)
A variety of Minerals
What is Hellandite-(y)?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Hellandite-(y) before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Quick Facts
Physical Properties
- Color
- Yellow, green
- Hardness (Mohs)
- 5.5
- Rock tumbling
- With care
Chemical Properties
- Chemical Formula
- (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 In the IMA approved report on hellandites [Am. Mineral.,87 (2002), 745–752], the occupancy at the T sites was given as (Be,Li)2–x however the value of x was not specified. Actually it is always x > 1, therefore the T site is vacant in the ideal formulae of hellandite-(Y).
- Elements
- Al, B, Ca, H, O, Si, Y
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Hellandite-(y) FAQs
How do I identify Hellandite-(y)?
Hellandite-(y) can be identified by its hardness of 5.5 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.
What color is Hellandite-(y)?
Hellandite-(y) typically appears in Yellow, green. Color can vary depending on impurities and formation conditions.
How hard is Hellandite-(y)?
Hellandite-(y) has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.
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