Knowledge Base/Herbs/Chlorite / Mica Schist
Educational and cultural reference only — not medical advice. We do not diagnose, do not prescribe, do not recommend medicines or doses, and make no claim to treat or cure any condition. Nothing here should delay you from seeking care. If you have a health concern, consult a licensed healthcare professional.
化痰药（矿物药） · Phlegm-resolving mineral drug

Chlorite / Mica Schist méng shí · 礞石

Chloriti Lapis (青礞石, chlorite schist); Micae Lapis Aureus (金礞石, mica-dominant schist)

Nature and flavour. Salty and neutral; Lung, Heart and Liver systems.

Traditionally classed as sweeping away stubborn phlegm and driving it downward, as calming the Liver and settling fright, and as checking cough and congested breathing. Recorded for old, stubborn, congealed phlegm; for cough and congested breathing with thick phlegm; and for the agitated, convulsive and what the classical texts call manic presentations attributed to phlegm-heat harassing the upper body. Two materials circulate under this name: 青礞石, a chlorite schist, and 金礞石, a mica-dominant rock; both are rocks, both are calcined before use in the classical method, and neither is a plant.

性味归经。咸，平；归肺、心、肝经。

传统归类为坠痰下气、平肝镇惊、止咳平喘。古籍用于老痰、顽痰胶结，痰稠之咳喘气逆，以及痰热扰于上焦所致烦躁、惊搐与古所称狂证。此名下流通两种矿物：青礞石（绿泥石片岩）与金礞石（以云母为主的变质岩）；二者皆为岩石，传统均需煅后入药，皆非植物药。

Classical category · no formulas, no dosages, no herb-drug combinations are given.
Safety. The presentations it is classically used for — convulsions, agitation, and what the old texts call mania — are exactly the ones that require conventional assessment, and no outcome has been established for this rock in any of them. Two safety facts are not debatable. First, it is a mined rock of variable composition; mineral drugs concentrate arsenic, lead and other heavy metals depending on the source, and the label will not tell you the content. Second, the classical sources record it as a forceful, downward-driving drug, contraindicated in pregnancy and not for weak or debilitated people, and not to be taken long-term. Confusion between the two schists is common in trade. Safety in breastfeeding is not established.

古籍所载其主治 —— 抽搐、烦躁及旧时所称狂证 —— 恰恰是最需要常规医学评估的情形，本品对上述任何一种的结局均无确立证据。两点安全性事实无可争议。其一，本品为成分不定的天然矿石，矿物药会依产地富集砷、铅等重金属，标签不会标明含量。其二，古籍把它记为药力峻猛、主沉降之品，孕妇禁用，体弱者不宜，且不可久服。市售品中两种片岩混淆常见。哺乳期安全性未确立。

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