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。
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。
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。
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 .
