tua-ma-lin

Tôi nhìn thấy những tinh thể tua-ma-lin lấp lánh trong lòng đá.

Definition

1. Noun (Geology):
   • Tourmaline: A complex crystalline silicate mineral that occurs in long prismatic crystals. It is notable for its ability to become electrically charged when heated or subjected to friction (pyroelectric and piezoelectric properties).

Usage Examples

• Noun:
  • Viên tua-ma-lin này có nhiều màu sắc đẹp. (This piece of tourmaline has many beautiful colors.)
  • Tua-ma-lin là một khoáng chất thú vị trong địa chất học. (Tourmaline is an interesting mineral in geology.)
  • Người ta thường dùng tua-ma-lin để làm đồ trang sức. (People often use tourmaline to make jewelry.)

Advanced Usage

• "tua-ma-lin đen": black tourmaline (schorl), often associated with grounding properties in metaphysical contexts.
  • Tua-ma-lin đen được cho là có khả năng bảo vệ. (Black tourmaline is believed to have protective abilities.)

Variants and Related Words

• Tourmaline: The standard English term for "tua-ma-lin".
• Schorl: The specific name for black, iron-rich tourmaline.
• Elbaite: The specific name for colorful, lithium-rich tourmaline varieties like rubellite (pink) and indicolite (blue).

Synonyms

• Tourmaline: The direct synonym.
• Silicat khoáng: Silicate mineral (a broader category).

Related Scientific Terms

• Khoáng vật có tính áp điện: Piezoelectric mineral (a mineral that generates an electrical charge under mechanical stress).
• Đá quý màu: Colored gemstone (as tourmaline is often used in jewelry).