UST Textures (Brain Rock)


Summary

This video provides an in-depth overview of USS textures found in highly fractionated rocks associated with ore deposits. It explores the crystal growth patterns in cooling metal in geological contexts like IGN intrusions, focusing on the composition, texture, and characteristics of USS rocks. The video discusses different models for USS formation, including magmatic and hydrothermal models, and delves into the factors influencing quartz crystallization. It also explains the hydrothermal model for USS formation, emphasizing the role of hydrothermal fluid bubbles, quartz vein formation, and mineralization processes. Overall, it offers valuable insights into the formation and significance of USS in understanding hydrothermal systems.


Introduction to USS Textures

An overview of USS textures found in highly fractionated rocks associated with certain ore deposits, introduced by Doug Kerwin.

Metallurgical Literature on Crystal Growth

Description of crystal growth patterns in cooling metal, specifically in geological contexts like IGN intrusions.

Texture and Composition of USS Rocks

Details on the composition and texture of USS rocks, characteristics of quartz crystals, and their growth patterns.

Formation and Variations in USS Rocks

Explanation of the formation process of USS rocks, variations in quartz layers, sizes, shapes, and contortions.

Models for USS Formation

Discussion on different models for USS formation, including magmatic and hydrothermal models, and the factors influencing quartz crystallization.

Crystal Growth Mechanisms in USS

Exploration of crystal growth mechanisms in USS, including closed and open system models, fluid pressure effects, and banding patterns.

Hydrothermal Model for USS Formation

Explanation of the hydrothermal model for USS formation, highlighting the role of hydrothermal fluid bubbles, quartz vein formation, and quartz crystal growth.

Mineralization and Economic Deposits

Overview of mineralization processes related to USS, economic mineral deposits, and the significance of USS in understanding hydrothermal systems.

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