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Light Blue Crystals - Statistics
General Stats
- This quiz has been taken 24 times
- The average score is 3 of 5
Answer Stats
| Description | Answer | % Correct |
|---|---|---|
| Subtle agate variety; lacy bands of blue, white, and grey; coloured layers consist of micro-crystals of quartz; forms in geodes within volcanic rock | Blue lace agate | 83%
|
| AKA anhydrite; common sedimentary mineral that forms massive layers of rock; created when gypsum loses water; can also occur from evaporation of sea water or weathering of pyrite; named after Angela - the partner of the person who discovered the stone | Angelite | 78%
|
| A main component of human tooth enamel; crystals have a 'crackled' appearance underneath smooth surfaces; name derives from the Greek word 'Apate' meaning "deceiver" | Apatite | 65%
|
| Used in making ceramics, glass, flares, and fireworks; often forms at high temps in granite and pegmatite; crystallizes from evaporation of salt water; clusters are more common than individuals crystals | Celestite | 35%
|
| Discovered in 1967 in the Merelani Hills near Mount Kilimanjaro in Tanzania; rare variety of the mineral zoisite; has pleochroism of red, blue, and brown; blue colouring is deepened by heating | Tanzanite | 30%
|
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