---
license: cc-by-nc-4.0
tags:
- gaussian-splatting
- 3d-reconstruction
- mineralogy
pretty_name: "Chrysocolla (Bagdad AZ) Specimen (chry-001) — Gaussian Splat"
originSessionId: fa57a6d8-3a13-409a-b8c2-a786bb4996d2
---
# Chrysocolla (Bagdad AZ) Specimen (chry-001) — Gaussian Splat

Green crystal specimen (Chrysocolla from Bagdad, AZ) captured and reconstructed using Gaussian Splatting.

## Specimen Details

- **Mineral:** Chrysocolla (Bagdad AZ)
- **Location:** Bagdad, AZ
- **Listed on:** Borussia Minerals

## Capture Method

- **Device:** iPhone (handheld)
- **Total frames captured:** 24 (green-crystal-cropped session)
- **Accepted frames:** 16 (images/ directory)
- **Rejected frames:** 8 (rejected/ directory — kept for reproducibility)
- **Coverage note:** Light coverage — only 24 frames total, limited top/bottom angles

## Directory Structure

```
images/          — 16 accepted source images (JPG)
rejected/        — 8 rejected frames (kept for reproducibility)
runs/
  v1-macbook-7k/
    output.ply   — 7,000 iteration Gaussian Splat (133MB)
    params.json  — training parameters
image-report.json
triage-report.md
notes.md
```

## PLY Iterations

| Run | Iterations | Node | Size | Notes |
|-----|-----------|------|------|-------|
| v1-macbook-7k | 7,000 | MacBook Pro | 133MB | First successful run |

## Training Pipeline

1. **Structure from Motion:** COLMAP (feature extraction + matching + mapping)
2. **Gaussian Splat training:** opensplat
3. **Input:** Background removed / cropped source images

## Known Issues

- Only 24 source frames — coverage gaps at top and bottom angles
- A reshoot with more frames would improve reconstruction quality
- Single PLY iteration available

## Viewing PLY Files

Use [SuperSplat](https://supersplat.dev/) or [KIRI Engine](https://www.kiriengine.com/) to view `.ply` Gaussian Splat files in-browser.