chert

1. A single pore between chert granules in a rock formation in ontario province , canada , shows off its colors in this photomicrograph .

加拿大安大略省的一块岩石中，单独的小孔间隔分布在黑硅石颗粒中，图中展示了它在显微照片中的颜色。

2. Pure siliceous ooze , a diagenetic environment for early chert formation .

纯硅质淤泥，早期燧石形成的成岩环境。

3. Paleontologists know chert as a good place to look for fossils .

古生物学者知道黑矽石同样的好地方去观看化石。

4. Bernal heights natural area , a 24-acre knob of red franciscan chert that rises from a sea of colorful row houses like the prow of a ship , has a 360-degree view of san francisco in its pastel glory .

bernalheights自然保护区，一座24英亩的红色弗兰西斯肯燧石小山，如舰首般耸立在一排排多彩的房屋建筑之海中，这里可以看到一幅360度的旧金山全景，笼罩在其柔和的光辉中。

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